Cars a 2001 z28 all factory weight car, has a circle d 2c 3400 converter, 3.23 gear, 1 7/8 tsp headers, 3.5in dynomax exhaust, ssra, maf delete, slp lid / fram filter, tune, nitto 555r tires. It spun on every pass but that was the best, I did hit 109 mph once. Da was 5250.