Also, one comment made by Dan (the guy who drove all the cars). He mentioned how strange it was that all the cars were almost identical to feel and how much power they put down. He like Brians car and said I should go turbo.
well that one is simple .... Greg did all of the porting and most of the builds. I do believe everyone was running SVT cams, SVT intakes and headers with exhaust to support in one way, shape or form. also most where 04 engines also with most being under 30k in miles, iirc.