It's about time I share this chart of transmissions and specs with the internet. I can't remember where I found it, but It's answered more than one questions in it's time on my hard drive. It's a bit cluttered, but excel spread sheets don't transfer that well to forums. Many models from many countries so take a browse through and see what you can find.

Aus. Impreza WRX STi MY02-04 ?? 3.64 2.38 1.76 1.35 1.06 0.84 3.55 1 3.9 Viscous (4kgf) A.P. Suretrac
JDM Impreza WRX STi MY01-02
(also Prodrive Style & STi Limited MY02) TY856WB1AA 3.64 2.38 1.76 1.35 1.06 0.84 3.55 1 3.9 Viscous (4kgf) Open
JDM Impreza WRX STi & STi RA MY01-02
(also Prodrive Style & STi Limited MY02) TY856WB1CA 3.64 2.38 1.76 1.35 1.06 0.84 3.55 1 3.9 Viscous (4kgf) A.P. Suretrac
JDM Impreza WRX STi RA MY01 TY856WB1BA 3.64 2.38 1.76 1.35 1.06 0.84 3.55 1 3.9 DCCD (45:55) A.P. Suretrac
JDM Impreza WRX STi RA Spec C MY02
(also S202) TY856WB2GA 3.64 2.38 1.76 1.35 1.06 0.84 3.55 1 3.9 Viscous (4kgf) A.P. Suretrac w/ external transmission cooler
JDM Impreza WRX STi RA Spec C MY02 TY856WB2DA 3.64 2.38 1.76 1.35 1.06 0.84 3.55 1 3.9 DCCD (45:55) A.P. Suretrac w/ external transmission cooler
JDM Impreza WRX STi MY03 TY856WB3AA 3.64 2.38 1.76 1.35 1.06 0.84 3.55 1 3.9 Viscous (4kgf) Open
JDM Impreza WRX STi MY03 TY856WB3KA 3.64 2.38 1.76 1.35 1.06 0.84 3.55 1 3.9 DCCD (35:65) A.P. Suretrac automatic DCCD system
JDM Impreza WRX STi Spec C MY03 TY856WB3JA 3.64 2.38 1.76 1.35 1.06 0.84 3.55 1 3.9 DCCD (35:65) A.P. Suretrac automatic DCCD on 17 in. wheel only
JDM Impreza WRX STi MY04 TY856WB4AA 3.64 2.38 1.76 1.35 1.06 0.84 3.55 1 3.9 Viscous (4kgf) Open
JDM Impreza WRX STi MY04 + V-Limited MY04 TY856WB4KA 3.64 2.38 1.76 1.35 1.06 0.84 3.55 1 3.9 DCCD (35:65) A.P. Suretrac automatic DCCD system
JDM Impreza WRX STi Spec C MY04 TY856WB4JA 3.64 2.38 1.76 1.35 1.06 0.84 3.55 1 3.9 DCCD (35:65) A.P. Suretrac automatic DCCD on 17 in. wheel only
JDM Impreza WRX STI MY05 TY856WB6CA 3.64 2.38 1.76 1.35 1.06 0.84 3.55 1 3.9 Viscous (4kgf) Open
JDM Impreza WRX STi MY05 TY856WB6KA 3.64 2.38 1.76 1.35 1.06 0.84 3.55 1 3.9 DCCD (35:65) A.P. Suretrac automatic DCCD system
JDM Impreza WRX STi Spec C MY05 TY856WB6JA 3.64 2.38 1.76 1.35 1.06 0.84 3.55 1 3.9 DCCD (35:65) Helical LSD automatic DCCD on 17 in. wheel only
JDM Legacy S401 ?? 3.64 2.38 1.76 1.35 1.06 0.84 3.55 1 3.9 Viscous (4kgf) A.P. Suretrac
US Impreza WRX STi MY04 TY856WH3MA 3.64 2.38 1.76 1.35 0.97 0.76 3.55 1 3.9 DCCD (35:65) A.P. Suretrac automatic DCCD system
US Impreza WRX STi MY04 late TY856WH4MA 3.64 2.38 1.76 1.35 0.97 0.76 3.55 1 3.9 DCCD (35:65) A.P. Suretrac automatic DCCD system
US Impreza WRX STi MY05 TY856WW6MA 3.64 2.38 1.76 1.35 0.97 0.76 3.55 1 3.9 DCCD (35:65) Helical LSD automatic DCCD system / front axle design change
US Impreza WRX STi MY06-07 1.1 3.9 DCCD
UK/Europe/NZ Impreza WRX STi MY02-04 TY856WN*** 3.64 2.38 1.76 1.35 0.97 0.76 3.55 1.1 3.9 Viscous (4kgf) A.P. Suretrac


JDM Legacy RS & GT (turbo) MY93 TY752VB2DA 3.45 2.06 1.45 1.09 0.83 4.11
JDM Legacy RS & GT (turbo) MY94-95 TY752VBAAA 4.11
JDM Legacy RS & GT (turbo) MY96 TY752VBBAA 4.11
JDM Legacy RS & GT (turbo) MY97-98 TY752VBCBA 4.11
JDM Legacy GT B-Spec MY97-98
(also GT B-Spec Limited) TY752VBCAA 4.44
JDM Legacy RSK & GT-B MY99-00 TY754VBAAA 4.44
JDM Legacy RSK MY00 TY754VBACA 4.44 Viscous (4kgf) Helical LSD w/ LSD option
JDM Legacy RSK & GT-B MY01 TY754VBBBA 4.11 Viscous (4kgf) Open
JDM Legacy RSK & GT-B MY01 TY754VBBCA Viscous (4kgf) Helical LSD w/ LSD option
JDM Forester Turbo MY98 TY753VB1AA 4.44 Viscous (4kgf) Open
JDM Forester Turbo MY99-00 TY755VB1AA 4.44 Viscous (4kgf) Open
JDM Forester Turbo MY01-02 TY755VB2AA 4.44 Viscous (4kgf) Open
JDM Impreza WRX MY93 TY752VB3AA 3.45 2.06 1.45 1.09 0.83 3.42 1 4.11 Viscous (4kgf) Open
JDM Impreza WRX RA MY93 TY752VB3BA 3.45 2.33 1.75 1.35 0.97 3.42 1 4.11 Viscous (4kgf) Open
JDM Impreza WRX, WRX SA, WRX STi MY94 TY752VB3CA 3.45 2.06 1.45 1.09 0.83 3.42 1 4.11 Viscous (4kgf) Open Double-cone 2nd synchro added (all turbo Impreza)
JDM Impreza WRX RA MY94 TY752VB3DA 3.45 2.33 1.75 1.35 0.97 3.42 1 4.11 Viscous (4kgf) Open Double-cone 2nd synchro added (all turbo Impreza)
JDM Impreza WRX & WRX STi MY95 TY752VB3FA 3.45 2.06 1.45 1.09 0.83 3.42 1 4.11 Viscous (4kgf) Open
JDM Impreza WRX RA MY95 TY752VB3EA 3.45 2.33 1.75 1.35 0.97 3.42 1 3.9 Viscous (4kgf) Open
JDM Impreza WRX STi RA MY95 TY752VB3EA 3.45 2.33 1.75 1.35 0.97 3.42 1 3.9 DCCD (35:65) Open DCCD fitted off production line
JDM Impreza WRX & WRX STi Ver.II MY96
(also STi 555 & WRX V-Limited Ver.II MY96) TY752VB4AA 3.45 2.06 1.45 1.09 0.83 3.42 1 4.11 Viscous (4kgf) Open
JDM Impreza WRX RA MY96 TY752VB4BA 3.45 2.33 1.75 1.35 0.97 3.42 1 3.9 Viscous (4kgf) Open Double-cone 3rd synchro added (RA only)
JDM Impreza WRX STi RA Ver.II MY96
(also STi RA 555 & RA V-Limited Ver.II MY96) TY752VB4CA 3.45 2.33 1.75 1.35 0.97 3.42 1 3.9 DCCD (35:65) Open Double-cone 3rd synchro added (RA only)
JDM Impreza WRX & WRX STi Ver.III/IV MY97-98
(also STi V-Limited Ver.III MY97) TY752VBCAA 3.17 1.88 1.3 0.97 0.74 3.42 1 4.44 Viscous (4kgf) Open Double-cone 3rd synchro added (all turbo Impreza)
JDM Impreza WRX RA MY97-98
(also WRX R V-Limited MY98) TY752VB5BA 3.08 2.06 1.55 1.15 0.83 3.42 1 4.44 Viscous (4kgf) Open Widened 1st,2nd,3rd gears (EJ20K models only)
JDM Impreza WRX STi R & RA Ver.III/IV MY97-98
(also STi Type R V-Limited Ver.IV MY98) TY752VB5CA 3.08 2.06 1.55 1.15 0.83 3.42 1 4.44 DCCD (35:65) Open Widened 1st,2nd,3rd gears (EJ20K models only)
JDM Impreza WRX 5-Door MY97-98 TY752VBCBA 3.45 2.06 1.45 1.09 0.83 3.42 1 4.11 Viscous (4kgf) Open Double-cone 3rd synchro added (all turbo Impreza)
JDM Impreza WRX STi RA V-Limited Ver.IV MY98 TY752VB6EA 3.08 2.06 1.55 1.15 0.83 3.42 1 4.44 DCCD (35:65) Helical LSD
JDM Impreza 22B TY752VB6SZ 3.08 2.06 1.55 1.15 0.83 3.42 1 4.44 DCCD (35:65) Open Specially treated gear components
JDM Impreza WRX 5-Door MY99-00 TY754VB1AA 3.45 2.06 1.45 1.09 0.83 3.33 1 4.11 Viscous (4kgf) Open Bellhousing attachment changed from 4 to 8 points (all models)
JDM Impreza WRX RA & RA Ltd. MY99-00 TY754VB1BA 3.08 2.06 1.55 1.15 0.83 3.33 1 4.44 Viscous (4kgf) Open Bellhousing attachment changed from 4 to 8 points (all models)
JDM Impreza WRX & WRX STi Ver.V/VI MY99-00 TY754VBAAA 3.17 1.88 1.3 0.97 0.74 3.33 1 4.44 Viscous (4kgf) Open Bellhousing attachment changed from 4 to 8 points (all models)
JDM Impreza WRX STi R & RA Ver. V/VI MY99-00
(also STi RA Limited Ver. V/VI MY99-00) TY754VB1CA 3.08 2.06 1.55 1.15 0.83 3.33 1 4.44 DCCD (35:65) Open Helical FLSD avail. 12/99 on regular STi RA (optional?)
JDM Impreza WRX STi RA Ltd. Ver. V/VI MY99-00
(also S201) TY754VB1EA 3.08 2.06 1.55 1.15 0.83 3.33 1 4.44 DCCD (35:65) Helical LSD
JDM Impreza WRX NB, NBR, 20K MY01-02 TY754VBBAA 3.17 1.88 1.3 0.97 0.74 3.33 1 4.44 Viscous (4kgf) Open
JDM Impreza WRX MY03 TY754VB4AA 3.17 1.88 1.3 0.97 0.74 3.33 1 4.44 Viscous (4kgf) Open Reverse engagement & 3rd/4th synchro revised (see US info)
JDM Legacy 2.0GT MY04
(also US Legacy 2.5GT) TY757VBAAB 3.17 1.88 1.3 0.97 0.74 3.33 1 4.11 Viscous (4kgf) Open
JDM Legacy 2.0GT spec B MY04 TY757VBABB 3.17 1.88 1.3 0.97 0.74 3.33 1 4.44 Viscous (4kgf) Open
JDM Legacy 2.0GT MY05 TY757VBBAB 3.17 1.88 1.3 0.97 0.74 3.33 1 4.11 Viscous (4kgf) Open dual cone 1st synchro
JDM Legacy 2.0GT spec B MY05 TY757VBBBB 3.17 1.88 1.3 0.97 0.74 3.33 1 4.44 Viscous (4kgf) Open dual cone 1st synchro

US Impreza WRX MY02 TY754VN2AA 3.45 1.95 1.37 0.97 0.74 3.33 1.1 3.9 Viscous (4kgf) Open Rev. pop-out addressed 10/01 (main shaft, rev. idler, rev. hub)
US Impreza WRX MY03 TY754VN2BA 3.45 1.95 1.37 0.97 0.74 3.33 1.1 3.9 Viscous (4kgf) Open 1st, 2nd, 3rd gears widened to RA width
US Impreza WRX MY04 TY754VV4AA 3.45 1.95 1.37 0.97 0.74 3.33 1.1 3.9 Viscous (4kgf) Open 3rd synchro stop changed (3/4 gear, synchro assy)
US Impreza WRX late MY04 TY754VV5AA 3.45 1.95 1.37 0.97 0.74 3.33 1.1 3.9 Viscous (4kgf) Open 1st synchro changed to dual cone type?
US Impreza WRX MY05 TY754VZ6AA 3.45 1.95 1.37 0.97 0.74 3.33 1.1 3.9 Viscous (4kgf) Open
US Forester XT MY04 TY755VH4AA 3.45 1.95 1.37 0.97 0.74 3.33 1 4.44 Viscous (4kgf) Open Gears as per WRX revisions
US Forester XT MY05 TY755VW5AA 3.45 1.95 1.37 0.97 0.74 3.33 1 4.44 Viscous (4kgf) Open
US Baja Turbo MY04 TY754VHEAA 3.45 1.95 1.37 0.97 0.74 3.33 1 4.44 Viscous (4kgf) Open Gears as per WRX revisions
US Legacy Turbo GT MY05 TY757VBAAB 3.17 1.88 1.3 0.97 0.74 3.33 1 4.11 Viscous (4kgf) Open
US Legacy Turbo Outback MY05 TY757VWAAB

UK/Europe Impreza Turbo 2000 / GT MY94-95
(also Series McRae MY95) TY752VN3BA 3.45 1.95 1.37 0.97 0.74 3.42 1 4.11 Viscous (4kgf) Open
Aus. Impreza WRX MY94 ?? 3.45 1.95 1.37 0.97 0.74 3.42 ?? 3.9 Viscous (4kgf) Open
UK/Europe Impreza Turbo 2000 / GT MY96 TY752VN4BA 3.45 1.95 1.37 0.97 0.74 3.42 1 4.11 Viscous (4kgf) Open
UK/Europe Impreza Turbo 2000 / GT MY97 TY752VN5BA
UK/Europe Impreza Turbo 2000 / GT MY98 TY752VN6AA
UK/Europe Impreza Turbo 2000 / GT MY99 TY754VN1AA
UK Prodrive P1 MY99 ?? 3.17 1.88 1.3 0.97 0.74 3.33 1 4.44 Viscous (4kgf) Open


US Impreza (FWD) MY93-94 TY752VX3AA 3.64 1.95 1.34 0.97 0.78 N/A 3.58 1 4.11 N/A Open
US Impreza (AWD) MY93 TY752VX3AA 3.55 1.95 1.37 0.97 0.78 N/A 3.42 1 4.11 Viscous (4kgf) Open
US Impreza (AWD) MY94 TY752VX3CA 3.55 1.95 1.37 0.97 0.78 N/A 3.42 1 4.11 Viscous (4kgf) Open
US Impreza (AWD) MY95 TY752VT3AA 3.55 2.11 1.45 1.09 0.83 N/A 3.42 1 3.9 Viscous (4kgf) Open
US Impreza EJ18E (AWD) MY96 TY752VT4AA 3.55 2.11 1.45 1.09 0.83 N/A 3.42 1 3.9 Viscous (4kgf) Open
US Impreza EJ22E (AWD) MY96 TY752VABBA 3.55 1.95 1.37 0.97 0.78 N/A 3.33 1 3.9 Viscous (4kgf) Open
US Impreza EJ18E (AWD) MY97 TY752VT5AA 3.55 2.11 1.45 1.09 0.83 N/A 3.42 1 3.9 Viscous (4kgf) Open
US Impreza EJ22 (AWD) MY97-98 TY752VA5AA 3.55 1.95 1.37 0.97 0.78 N/A 3.33 1 3.9 Viscous (4kgf) Open
US Impreza 2.5RS MY98 TY752V2DAA 3.55 2.11 1.45 1.09 0.78 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Impreza EJ22 MY99-01 TY754VA1AA 3.55 1.95 1.37 0.97 0.78 N/A 3.33 1 3.9 Viscous (4kgf) Open
US Impreza 2.5RS MY99-01 TY754VCAAB 3.55 2.11 1.45 1.09 0.78 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Impreza RS MY02-03 TY754VFBBA 3.55 2.06 1.45 1.09 0.78 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Impreza TS MY02-03 TY754VC2AA 3.55 2.06 1.45 1.09 0.78 N/A 3.33 1 3.9 Viscous (4kgf) Open
US Impreza Outback MY02-03 TY754VC2BA 3.55 2.06 1.45 1.09 0.78 N/A 3.33 1 3.9 Viscous (4kgf) Open
US Impreza RS MY04 TY754VC4CA 3.55 2.11 1.45 1.09 0.78 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Impreza TS MY04 TY754VC4AA 3.55 2.11 1.45 1.09 0.78 N/A 3.33 1 3.9 Viscous (4kgf) Open
US Impreza Outback MY04 TY754VC4BA 3.55 2.11 1.45 1.09 0.78 N/A 3.33 1 3.9 Viscous (4kgf) Open
US Forester MY97-98 TY753VJ1AA 3.55 2.11 1.45 1.09 0.78 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Forester MY99 TY755VC1AA 3.55 2.11 1.45 1.09 0.78 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Forester MY00-01 TY755VC1BA 3.55 2.11 1.45 1.09 0.78 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Forester MY02 TY755VC2AA 3.55 2.11 1.45 1.09 0.78 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Forester MY03 TY755VC3AA 3.45 2.06 1.45 1.09 0.78 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Forester (non-turbo) MY04 TY755VC4AA 3.45 2.06 1.45 1.09 0.78 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Legacy Outback MY94 TY752VAAAA 3.55 2.11 1.45 1.09 0.78 N/A 3.42 1 4.11 Viscous (4kgf) Open
US Legacy MY94 TY752VAABA 3.55 2.11 1.45 1.09 0.78 N/A 3.42 1 3.9 Viscous (4kgf) Open
US Legacy MY95-96 TY752VABAA 3.55 2.11 1.45 1.09 0.78 N/A 3.42 1 3.9 Viscous (4kgf) Open
US Legacy Outback MY95-96 TY752VABBA 3.55 2.11 1.45 1.09 0.78 N/A 3.42 1 4.11 Viscous (4kgf) Open
US Legacy GT MY97 TY752VACBA 3.55 2.11 1.45 1.09 0.78 N/A 3.42 1 4.11 Viscous (4kgf) Open
US Legacy Outback MY97 TY752VACCA 3.55 2.11 1.45 1.09 0.87 N/A 3.42 1 4.11 Viscous (4kgf) Open
US Legacy MY97-98 TY752VACAA 3.55 2.11 1.45 1.09 0.78 N/A 3.42 1 3.9 Viscous (4kgf) Open
US Legacy GT MY98 TY752V2DAA 3.55 2.11 1.45 1.09 0.78 N/A 3.42 1 4.11 Viscous (4kgf) Open
US Legacy Outback MY98 TY752V2DCA 3.55 2.11 1.45 1.09 0.87 N/A 3.42 1 4.11 Viscous (4kgf) Open
US Legacy MY99 TY754VAAAA 3.55 2.11 1.45 1.09 0.78 N/A 3.33 1 3.9 Viscous (4kgf) Open
US Legacy GT MY99 TY754VCAAB 3.55 2.11 1.45 1.09 0.78 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Legacy Outback MY99 TY754VCACB 3.45 2.11 1.45 1.09 0.87 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Legacy L & Brighton MY00 TY754VCAAA 3.45 2.06 1.45 1.09 0.78 N/A 3.33 1 3.9 Viscous (4kgf) Open
US Legacy Outback MY00 TY754VCACA 3.45 2.06 1.45 1.09 0.87 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Legacy GT MY00 TY754VCADA 3.45 2.06 1.45 1.09 0.78 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Legacy L & Brighton MY01-02 TY754VCBAA 3.45 2.06 1.45 1.09 0.78 N/A 3.33 1 3.9 Viscous (4kgf) Open
US Legacy GT MY01-02 TY754VCBDA 3.45 2.06 1.45 1.09 0.78 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Legacy Outback MY01-02 TY754VCBCA 3.45 2.06 1.45 1.09 0.87 N/A 3.33 1 3.9 Viscous (4kgf) Open
US Legacy L MY03-04 TY754VCDAA 3.45 2.06 1.45 1.09 0.78 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Legacy GT MY03-04 TY754VCDDA 3.45 2.06 1.45 1.09 0.78 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Legacy Outback & Baja MY03-04 TY754VCDCA 3.45 2.06 1.45 1.09 0.87 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Legacy & Baja MY05 TY757VCACA 3.45 2.06 1.45 1.09 0.87 N/A 3.33 1 4.11 Viscous (4kgf) Open
US Legacy Outback MY05 TY757VWAAB 3.45 2.06 1.45 1.09 0.87 N/A 3.33 1 4.11 Viscous (4kgf) Open