Dana 60 4.10 sure grip value

Then it can be modded for an A body, just like a 60. I don't see an issue. I have a Dana 70 under my rat truck. All you'll need is to cut and narrow it and u bolts and shock plates.

Axle tubes are <3.5" .

If the spline count was the same as my 79 CB300 Class A I would consider using the locking diff .