I just built a 383 +.060 trick-flow heads, 440 source crank 3.915 stroke. Hughes flat tappet hyd. cam. I'm expecting 550 to 600 hp. Might be the cheapest way to go, more bang for the buck. If you want cam specs I'll post later. Its 10 degrees here and I don't want to go out to the shop. Waiting for warmer weather to break cam in. Oh, and ICON has pistons for this combo about 10.4-1 comp.