Drivetrain advice for engine swap

Here’s a low cost approach that workers good for me.
Not as good as an 8 ¾ but lots cheaper.
Don’t know about your budget.
The 8 ¼ is pretty strong.

A Diplomat 8 ¼ will be a little wider than an A-body 8 ¾ and it will improve handling and aesthetics in your Sport/Duster.

All you have to do is move the spring perches. The locating hole is bigger but just weld a couple of fender washer in.
I’ve got how-to pictures.
I’ve done the A-body 8 ¾ swap and even with the wider brakes and Moser axles the thing still looks puckered up from the rear to me.

And are you just going to go in a straight line with Green ball bearings on your 8 ¾ or are you going back with tapered rollers like Mother says?