I was just wondering if the C30 T5 part are interchangeable with the S40. Such as the down pipe, I found a C30 T5 down pipe for $330 and the down pipes for the S40 T5 are around $400-600. also a Turbo Upgrade kit for the C30. but they dont make one for the S40.

 

The C30 parts are compatible with the other P1 chassis cars. The exhaust and dp, from the C30 will only work with the FWD S40's though...