STI DIFF
 

Wondering what is involved to fit a rear sti lsd into my 93 wrx. Can i use my casing and crown wheel and just change the diff itself to keep the same ratio, or are they the same. What markings are there on the diff to let me know what yaer or type of diff it is.

Cheers for any help its my first time logged on.

AFAIK you can't, but you can buy a JDM WRX02-04 rear Suretrac for R160 that is same type with new age STI for you casing, direct bolt on if your casing is same with MY99-00s.
JIM