Early 64/65 A833 to later gear conversion?

Ok, I understand.
Have you considered camming it up? It might be the cheapest solution, possibly the best, depending on the track(s).I also undestand the tranny swap idea, very well. In 1970, Chrysler came out with the T/A gearset. The ratios were 2.47-1.77-1.34-1.00 IIRC . The splits are about 78%. pretty tight.That might be pretty good, esp. with a corresponding rear end swap. Might be murder, commuting though.