Though billed as the Cadillac Attack, the race also allowed Camaro ZL1s to compete, and have some fun. Stephen Vigoa brought his KraftWorks-built ZL1 to the event. Stephenâs ZL1 features a KraftWorks cold air and Comp Cams custom cam, a Nick Williams 102mm throttle body, Trick Flow GenX heads, American Racing headers, a Fore Precision fuel system feeding ID850 injectors, and a Nitrous Outlet system. âThe car is still on a stock bottom end, stock transmission and converter, stock axles, stock driveshaft, stock rear end, and stock blower,â Stephen says.