So I'm planning on swapping a usdm ej20 into a 96 L wagon using the stock tranny with a new clutch and flywheel. I've read this should hold up and lower gear ratios should be better. What does the L use for diffs? can I just swap in some jdm or usdm lsd's or would an aftermarket? what is the most cost effeicted method?
Thanks

 

A list from a previous post i did listing all the diffs i could find

It would be way to hard to describe all the transmission ratios so i'll post a chart

Model Year____Model Trim_______________Transmission___Front Ratio____Center Ratio____Rear Ratio____Rear VLSD
1991-1992____Legacy Turbo AWD_________5MT___________3.900________1.000______ ___3.900________Yes
1992-1997____SVX AWD (R-180 VLSD?)____4EAT__________3.545________N/A___________3.545________Yes
1993-2001____Impreza 1.8L, 2.2L AWD____4EAT____________4.111________N/A ________4.111________No
1993-2001____Impreza 1.8L, 2.2L AWD____5MT____________3.900________1.000________3. 900________No
1998-1999____Impreza 2.5RS____________4EAT____________4.444________N/A________4.444________No
1998-1999____Impreza 2.5RS____________5MT____________4.111________1.000 ________4.111________No
2000-2001____Impreza 2.5RS____________4EAT____________4.444________N/A ________4.444________Yes
2000-2001____Impreza 2.5RS____________5MT____________4.111________1.000 ________4.111________Yes
2002-2003____Impreza 2.5RS____________4EAT____________4.444________N/A________4.444________No
2002-2003____Impreza 2.5RS____________5MT____________4.111________1.000 ________4.111________No
2002-2003____Impreza TS, Outback Sport__4EAT____________4.111________N/A________4.111________No
2002-2003____Impreza TS, Outback Sport__5MT____________3.900________1.000________3. 900________No
2002-2003____WRX_____________________4EAT____________4. 111________N/A________4.111________Yes
2002-2003____WRX_____________________5MT____________3.9 00________1.100________3.545________Yes

Other North American Subaru models with VLSDs, either as standard equipment or available as an option:

* 2000-2002 Forester S (All Weather Package)
* 2003 Forester XS
* 2000 Legacy GT, Outback
* 2001-2003 Legacy (all)
* 2003 Baja

NON-LSD
Most R-160s you see under Subarus will NOT be an LSD. There were no LSDs of any kind in 1995-1999 Subarus.
Look for the following Subaru part numbers (look at the foil sticker for part number and ratio):
7220 11010: 3.70 ratio
7220 11011: 3.70 ratio
7220 11012: 3.70 ratio
6220 06020: 3.90 ratio
6220 06021: 3.90 ratio
6220 06022: 3.90 ratio
27011 AA151: 3.90 ratio
27011 AA040: 4.11 ratio
27011 AA110: 4.11 ratio
27011 AA111: 4.11 ratio


*Grumbles at lack of html support*
(information hijacked from http://www.legacycentral.org/library/differential.htm )