67 A body Barracuda 318 Exhaust manifolds Both
273 and 318 manifolds are the same as long as they are the same application.
64-68 273/318 RH manifold for A and B body is a #2465769
67-69 273/318 LH manifold for a A body is a #2780945
I also see a 2843953 RH manifold listed for 67-72 A B and C bodies
No idea if that was used much on A bodies though.