a body rear end ? 8 3/4 vs dana 60

]"Correct" for who?[/I]

The "correct" width for a rear axle the one that works with the wheels you want to use. And that depends on a lot of things. Spring location, mini-tubbed or not, 15 rims, 17/18" rims (or bigger), body style- Dart vs Duster, the rim you really want to use that only comes in a really weird offset...

I use a B-body rear axle in my Duster that's 3" WIDER than the A-body axle. And guess what? It's the "correct" width for my car with 18x10's and 295/35/18's.



Exactly. It will vary.

While the measurement may change from car to car you can definitely go narrower than stock if you are having one made. The factory setup uses all backspacing, especially with the inboard kit. 7.5" of so if my memory is right.

So you can, if you want, have one made narrower, offsetting some of the weight difference. I know with mine Strange said my Dana weighed near exact what factory width 8.75 weighs.