More exhaust manifolds

Sorry, I wasn't really asking a question about the difference between the driver's side manifolds. I do feel more educated in that I can see why some with early A-Bodies would say that a 340 driver's side manifold works and other don't. I'm clear on all that, and didn't know the later one was "shorter", so thanks.

Only question I have is - are you saying that both manifolds in the first picture in post #47 have large outlets? Or to state it a different way, do you agree that the seller in the link is correct that the driver's side manifold he was selling had a 2 1/4" outlet?