I had a 70 Duster that I put a Strange 60 into from Dr Diff. Very much an upgraded Dana. Just about a bolt in swap for my 8.75. Got an upgraded driveshaft but other than that the only thing I had to do was to clearance one of the rear cover aluminum fins so it would clear the fuel tank sender electrical plug. Other than that, I used existing BBP rear drum brakes & U bolts. I did also upgrade my rear springs to complete the project.