Tell me about this 273 and tranny.

Sorry Professor Fate, I believe it is a single point, because all mine are iron for the duel point, this one appears aluminum, for a single point. The 65' intake is a low rise one and I also have one to compare with.
Already addressed that four days ago.
Yes, the manifold is a factory low rise 4bbl.; which is why the rest of the components don't add up.