Summit 3" Duster Install
1. I picked up a B-body rear with the intention of narrowing it, since I had already bought wheels, and their offset would not work with the wider B-Body. So I could not do as you are going to do.
2. By the time I costed everything out, it was going to add another $500 to the build (new axles & bearings, seals, cut & weld, etc.) I could sell what I had, get my money back, add about $300 and have a Dana. (Did not do a good job thinking that through.)#-o
3. I had a Dana in my Duster when I was 19, and I wanted another one.
4. Coolness Factor, having the chrome cover peaking out from behind the gas tank!
However, if I had not already purchased wheels, I would have just moved the perches and bolted in the B-Body! But I don't regret the Dana, not 1 little bit.:-D