64-66 use their own manifold, I think offenhauser made one and I think there is a dual quad weiand intake and the stock intake.

67-69 can use any run of the mill 318 360 340 intake, the larger ones litke the performer RPM or LD340 have some port mismatch but no big deal on a stockish engine. The performer or street dominator fit good on the later ones.