Quote: Why not just keep it simple and swap on some '302 swirl port heads?
Everything you have now will bolt up. No fancy intake or manifolds needed. They are already set up for unleaded gas. And they flow better then the old 318 heads.
Magnum heads are better but if you are keeping the motor stockish i dont think they are worth all the extra crap you have to do to make them fit.
You must keep things in perspective, you're only feeding 318 cubic inches, you don't need a real high CFM head, leave those for the 408 stroker crowd. Pocket ported 302's with a 1.88 intake would be the way I'd go.
302's don't flow any better than open chambered 318 heads. they'll give you a better combustion chamber, hardened seats, and maybe 1/3-1/2 point compression boost, but heavily worked with 2.02's, they flow about the same on the intake (and worse on the exhaust) than factory magnums. not worth the trouble, IMHO
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You must keep things in perspective, you're only feeding 318 cubic inches, you don't need a real high CFM head, leave those for the 408 stroker crowd. Pocket ported 302's with a 1.88 intake would be the way I'd go. 
