ok, im building a 15, ive got a 15b7 block, 15b7 head fully assembled minus cam seal, am planing to get 15B crank and pistons. skunk 2 intake manifold, already have a DC sport 4-2-1 stainless header, full 2 1/4 exhaust w/ magnaflow muffler. any advice from the more knowledgable? is there a good cam i could use? im afraid i dont know alot about the D series motors.