What are the difference between the usdm prelude and the jdm type S prelude. I know they have better cams but what else?

 

I think the bore of the throttle body is different as well. It's a little large in diameter and the intake on it has some kinda of slight difference from the picture I have seen. The cams lift higher and give ya about 10-12 top end difference from the usdm ones.

 

Full factory port & polish job like the type-r's get!. Modified "dynamic chambers" intake pipe, finer intake manifold casting. Higher comp pistons (11.0), header, and high flow silencer...220ps