Ive seen a guy run a compucar 250 shot on a basically stock motor. The only obvious upgrades was h-pipe, 24lb. injectors, 190lph pump, and 70mm t/b and 3:73's. Intake, heads, cam were all stock. He was running 12.3 - 12.5's all night on e/t streets. 2 months later he put the systemax kit on and...