71 duster

I have a B/E body tail in my 68 Barracuda.
If your tail has two pads, the front one will have to be partially ground off because it hits the T-bar crossmember before being high enough to sit on the crossmember. So that leaves the rear pad; which is NOT in the A-body position, and so the shifter will not come thru the floor in the factory position.
And so you will have to figure out where you want to put your shifter, then fabricate a shifter mounting plate, to make that happen.. And you will have to mount it all in such a way that it cannot move when you start banging gears.
After that, if not in the factory position, you will have to fabricate shift-rods to fit.
After that, you may have to re-engineer the trans mount just a lil.
The driveshaft is easy peasy, but there goes the best part of $300.
All in all, I think I would have to be pretty broke not to chase down the right trans.
BTW-1
I also have a GVod, since 2004. And at that time, they only had a B/E aluminum adapter. So that is why I have it. Cutting aluminum is quick and easy.
BTW-2
I haven't looked at single pad long tails so I can't speak to those. But looking at the pic in post #4, that one won't work, without major surgery. You sorta gotta have a rear pad.