from what i have read 02-03 , 06 + , STI's diff wont work. (different gear ratios and differts axles etc.)correct me if i am wrong.( i know they could work with come mods)but i just need a replacement rear diff for my 04 wrx. thanks
I think all '02-'06 rear diffs will work. What you need is a 3.545:1 ratio R160 rear diff. What is wrong with the one in your car? I have one I'll sell you for very cheap that just needs a seal installed.
it exploded on the interstate. cracked the housing . i havn't took it apart yet but its f'ed. e-mail me a price @ [email protected] thanks