Making The Weak 7-1/4 Rear Axle Live... Kinda

I do not know. Axle width and perch width could be different. There are thousands in breakers, many with disc brakes. You would have to check with a tape measure. Check flange to flange using a couple of pieces of angle iron a foot long and c-clamp or vicegrip on the flange.
The centering pin on the spring would need to be checked for proper fit and the width. The advantage is the number available with 3.55 and 3.91 gears, sure grip and newer with discs, makes them fairly inexpensive.
Dakota's had a couple of widths depending on the year.
also, to note: 87~90/91 are 5x4.5 bolt pattern. 91/92~96 of that gen body style and 97~05 of the next style are 6x4.5

and discs didn't come till 03, and you'll need 16" rims to clear them.

so, sure a early dak rear with drums cut down would work and you wont' have to figure out wheel adapters.

the ranger or explorer 8.8 is a much better alternative.