340 HP Exhaust Manifolds on those 318 High Swirl 302 Heads

[dodge freak 2]

Anybody try to use them, will the big port 340 HP Exhaust  Manifolds seal to the small exhaust ports. I know the smog air holes should be tap and plug, easy enough but unsure if the flange is wide enough to get a tight seal around the ports.

[Chryco Psycho]

I am not sure , if you coat the manifold flange with grease to see where it contacts