im not sure but the reason big engines like 5.7l have a hard time creating big hp/l numbers is because they dont rev as high as imports, if youll notice on vettes red limit is like 6000rpms but imports are like 8,000rpms. But dont worry you import fans, camaros and f-birds arent gone forever they will be back in about 5 years or so! so until then youll have to watch out for those ss's, cobras, z06's and not to forget the vipers! oh yeah and the next time you pull up to a domestic and its shaking and loaping i wouldnt mess with it!:sun: