can i get a rear end from.....

The long side of a Jeep 8.8 rear end can be shortened to match the other, and you use another short side axle on what used to be the long side.
Perches need to be moved, as well as a different yoke on the rear of the driveline.

You could end up with an 8.8, rear disc brakes and locking diff.
It even matches up for the E brake cable.
Seen it done and they work great.

Notice how one side is longer?
When you cut the long side down to match the short side the rear end ends up the right width for an A body Mopar.

Also a lot of Jeeps have the 5 on 4.5 lug pattern (Large bolt pattern on a Mopar)
My chrome wheels came right off a Cherokee.