Comp cam 20-600-4

It's something you won't know until you assemble it. It MAY be ground on a reduced base circle. If it is, you may need longer pushrods. You're just gonna have to see. As far as the other, that's a really rowdy cam for a 318. With stock highway gears and a stock converter, it'll be a dead pig.......but it'll sound nasty. lol