Nope, just has headers, Edelbrock 800 carb, Edelbrock intake, MSD 6AL ignition. That's what it dyno'd at before we put it in. Maybe I just got a good one? I am in Florida so we are about 25 feet above sea level.Hey I see you have ZZ502/540HP in your tag line. Did you modify your 502/502 to put out 540HP?