I'm in a bit of a bind here. I have a 1987 318 block. I also can get my hands on a 1994 318 magnum. I want to use the newer magnum block because it only has 140k on it. But I'm not sure whether to use my ported 302's w/ 1.88 1.60's w/ 61cc chambers. or port the magnum heads.. only problem is I'm running a solid cam 270s and magnum rockers oil through the pushrod. What would any suggest? I'm looking for around 400hp