Is there a rear diff compatibility list floating around here? I've an opportunity to snag one from an 06 WRX, fingers crossed that it would work in my SF.
It will fit but it will not be the correct FD ratio. wrx/sti are in the 3.55-3.9 range and foresters are either 4.11 or 4.44 depending on transmission and year.
you can ballpark the rear diff compatability using RallySpec's transmission database. It indicates the final drive ratios, but the diff details (ie VLSD) can vary by trim level on each car still.
Thanks ya'll. I was hoping to get an lsd on the cheep, I think I'll wait for one out of a Foz S or something.
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