['68OrangeSunshine]

When I rebuilt the 12-Bolt differential from my '67 K/10 Suburban, the GM plant that made them was on strike. New OEM axles were unavailable. The diff shop said, try Moser.
I called them, and they were able to cut me a new pair for the same money as stock. When they came in, I was concerned that the outside diameter of the flange that mounts the wheel studs was over an inch smaller. Moser said they were guaranteed for life.
That rearend, with an added Auburn posi served under the Sub for about 3 years. Then an engine fire [and being Totalled with a Salvage Title by the insurance company] grounded the Sub.
In 2010, the 12-Bolt 3.73 Eaton posi under my '71 Jimmy lunched out. We cannibalized the Sub's diff for the Jimmy. Still running good for 12 years.