I bolted in one from a 66 B in my 69 dart. No mods.

The spring pearch difference is mninimal, but as said, tire clearance does get a littel tight. I had a aset of ralleys offset inward at the time, and that worked.

As said- 65-67 are the best to go with. The diff dimensions in the archives are a little iffy

I think this one is more accurate

5514279-axle.jpg (46 downloads)