Not sure where you're at , but the best advice I can offer on the west coast is to contact someone like Dave Mackey in the LA area (Cal) He matches cams to heads and cylinders. He offers a pkg deal where you send in your stuff to him and he works his magic on it. I've said this on another thread somewhere, can't remember which one. At one point before the V-Rods started dominating the drag stip Dave Mackey was the head guy for 7 out of the top 10 AHDRA top fuel racers. He also grinds his own cams with aggressive profiles, but easy ramps so you get good strong performance but not the wear and noise issues some high lift cams have. Carl's Speed shop in Daytona is superb as well. The important thing is to match your parts so going with a sole source on Heads, cylinders, pistons and cams is your best bet IMHO