Be sure to tell them you want factory original parts. They will sell you cheap stuff if you want. They rebuilt my dana 70 with all factory dana parts, Timkem and Dana at 300k. I had it changed from open to a Track lock or Power Lock, the better one? Also went with the D80 axles. I went from 3. 55 to 3. 73 and it made a big difference towing 21k truck and trailer.