273 / 318 Exhaust Manifold Question

I didn't think there was difference between 273 4BBL and 2BBL exhaust manifolds...

Look at the sweeping flow of your Commando manifold, looks like a Stock 340 performance manifold.

Then look at this standard A Body manifold on this 72 Duster 318, it is not the 340 manifold, just the standard manifold.

The shape and the way your's kicks out looks like it will deliver more performance. So Yeah, you do have some nice Commando manifolds On there.

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Any chance you have a better picture of what your passenger side exhaust manifold looks like?