Originally Posted by bugeyepower
i have a 03 wrx and am wondering how well all the subaru parts realy fit together? i was wondering if you could drop a v6 sti motor in my 03 wrx and be able to hook up all my wireing to it and basicly just use the block and heads. would my valve covers bolt up? stock wrx cams & springs fit?
it just seems like a cheep way to get a forged internals.
You cant directly drop in an sti motor without changing wiring/computer. You can however use a 2.5L block with your 2.0L heads and not change any wiring. Its called a hybrid setup and you should check out the built motors subforum