4 speed guys, I have a question :

It sure is a slow shifting dump truck of a transmission. Strong though.
I’d have to move my divorced transfer case and crossmember back a few inches.

My first attempt would be to use the shorter A-Body tail housing but would need the shifter in the B/body location. So an adapter plate (similar to the B-Body trans in an A-body adapter plate) would need to be made, only in reverse, …….I think. ****. I dunno. Lol
I just caught this thread and I happened to have my duster four speed and bellhousing out of the car on the garage floor...
Just some quick very ruff measurements I got about twenty inches from the front of the bell housing to where the four wheel drive shifters are on the driver side and about twenty four inches Full length on the short shaft seven twenty seven with my divorce transfer case...
I got about twenty eight inches from the beginning of the bellhousing back to about the center of the shifter mounting plate on the four speed and probably another five inches past that..
My Guess would be four problems at least I can see.. First the clutch linkage which could be solved by hydraulic throughout Bearing, not cheap...
From the measurements I'm doing it looks like the bracket would need to be made to move the shifter forward as it seems shifter from an a Body four speed and bell housing would come up darn near underneath the seat..
The last 2 problems The size of the small intermediate drive shaft would need to be much shorter and it may change the geometry of the drive line... I think the slip yoke would be easy to just make a smaller drive line as there isn't much movement between the transmission which is pretty much fixed and the transfer case. Probably more vibration movement than anything..