So I’m rebuilding a 70 duster and was wondering if a 73 charger rear end would fit and bolt up without any modifications needing to be done. Any info would be extremely helpful. Thanks
You’d have to move the perches for sure, on a 71-74 B they’re 47.3” center to center vs 43” for an A body.
That rear axle is also like 63” drum to drum, which IMO will be too much. I run a 68-70 B body rear in my Duster and it’s 60.125” drum to drum, and I’m already running quite a bit of backspace to make it work. And I run 18” wheels, you couldn’t get off the shelf 15’s even with what I run. The additional ~1.5” per side would make it very difficult to find wheels in any diameter that would fit.