So I raced my buddies 383 cam 2003 Z06 50 roll and the first race he yank me two cars and then missed fourth and then got to his bumper and then put it into fifth and was at a car and then let out. Second race gave me a the hit and lock out second, third and then inch away in forth and then by fifth had me by a car. My mods k&n rai, o/r x, 2.75 pulley and a voodoo racing tune. We tried to go from a dig but I couldn't get my nitto's to hook up. Over all I am happy with how the race went!