An XJ 8.25" would be more than fine, with stock tires.
They've held up pretty well in 1/2 ton full size trucks for 20+ years.
8.8's are a good option, but slightly narrower, and MJ's rears are already slightly narrow for the body (compared to the front).
There's plenty of full size Ford cars with automotive 9" Fords ~60" wide, with 5 on 4.5" bolt circle.
Tons of Chryslers from the 60's/70's used Chrysler 8.75" drop out center axles. They're a great heavy duty upgrade, and easy to change gearing later.
They also use the same backing plate patturn as 1990+ Jeeps (= cheap ZJ rear discs)
66-70 B-body's (Charger, Cornet, Belvedere, etc) are slightly narrower than stock (~59.5")
71+ B-body's (Charger, Satilite, etc) & 70+ E-body's (Challenger, Cuda) = slightly wider than stock (~61").
There's plenty other axle choices out there too.
Other than width, the 8.8" is still a good option, since they're so easy to find.
They've held up pretty well in 1/2 ton full size trucks for 20+ years.
8.8's are a good option, but slightly narrower, and MJ's rears are already slightly narrow for the body (compared to the front).
There's plenty of full size Ford cars with automotive 9" Fords ~60" wide, with 5 on 4.5" bolt circle.
Tons of Chryslers from the 60's/70's used Chrysler 8.75" drop out center axles. They're a great heavy duty upgrade, and easy to change gearing later.
They also use the same backing plate patturn as 1990+ Jeeps (= cheap ZJ rear discs)
66-70 B-body's (Charger, Cornet, Belvedere, etc) are slightly narrower than stock (~59.5")
71+ B-body's (Charger, Satilite, etc) & 70+ E-body's (Challenger, Cuda) = slightly wider than stock (~61").
There's plenty other axle choices out there too.
Other than width, the 8.8" is still a good option, since they're so easy to find.