Dana 60 too narrow

MOPARMAGA said
I don't have any wheels yet, however the weld wheels I'm looking at have as little as 2.5 back spacing. I have 4.25 from the end of the axle to the frame. I'm thinking I can get away with 3 Bs & 12 inch wide

YOu can't narrow the rear enough to effectively run a 2.5" backspace on a relocated A body.

I run 3.5" backspace on an 11.25" wheel. My calipers barely clear the leaf springs