Originally posted by DakarM
S54 MRoadster = 01-02.
with 11.9:1 stock compression I believe. might be 11.5:1 but you get my point.
that's what I was thinking you meant, not the s52 (95-99)
I'm talking about the 97, I know that a lot of SC companies don't go over 4psi stock for the s54