Mine is one of the smaller displacement engines here, it is a pump gas 451 low deck that I did most detail work on and assembled myself with rpm heads, .630 roller from Porter Racing Heads, victor intake, 1000 demon 4150 carb, 2" headers through 3.5" X pipe exhaust. LSM in Waterford MI did all the machine work for me. It makes just shy of 500 at the wheels on a dynojet @ 6250 rpm, and runs 123 in the quarter mile in street trim. I've had it mothballed a long time and only recently got it back out again.