Yeah, I was under the impression that the 292 manifold that had the outlet in the middle (between cylinder 3-4) was 2" or 2.25" and the one I posted above, that has the outlet centered over cylinder 4-5 was 2.5". The one I posted should be 2.5" but it's so much cheaper than the rest I don't want to risk it. I'm still waiting on the response from the seller...