1965 MOPAR, 273 Exhaust Maifolds

I got those off of some internet postings... That was what the listing said, however as we know, some listings may not be correct...

The point I was showing is the ports on the early manifolds do not overlap with the air holes on the later model heads and should seal on those also...
Correct, the early manifolds do not cover the A.I.R. ports, therefore those ports need to be plugged if using early manifolds on late heads. As mentioned, the LH '64-6 manifold will not bolt down on a late head without spacing the manifold out or grinding the head for clearance at the rear of the head below #7 exhaust port. You'll crack the manifold if you try.