You would probably be happier with the Performer intake instead of the Performer RPM... Matter of fact, Edelbrock has a cam designed to go with that manifold and a 500 CFM carb. Works good. Getting advice on cam selection usually opens up a large spectrum of different cams and combos to try. Personally I've used a couple of the Edelbrock packages. If you study them, and get the one that actually matches what you expect out of the engine they work out quite well and for the most part will perform as advertised. If you decide to upgrade the heads down the road sometime, they also make a great set of heads to match the cam, carb, and intake package!!!!