Engine/ Trans Combo?

greymouser7 said
The only reason that the '4 speed manual trans overdrive' A833 will NOT work is that truck transmissions have the B-body length shaft, not because it is an overdrive transmission. truck transmissions also run a 143 tooth gear flywheel with a larger bell housing that will NOT fit in your 64 Dart without cutting the firewall. you would have to cut and re-engineer the transmission mount & crossmember with the longer shaft/& casing that trucks & b-body's share

OP has a trans from an 83 Dodge van. I was thinking those were very short tails and were suspended from the top, with the shifter pad, if it has one, right there in about the B-body position which cannot in any circumstances be used in a stock A-body tunnel. In fact on my B/E longtail, that front B-body mount had to be partially hacked off to not hit inside the crossmember.
If I'm wrong then I apologize.