Moser 8 3/4 housing is a Ford

There is nothing wrong with ball bearings, or ford 9" parts. I have had many wrecking yard 9" and put 10,000's of miles on them. The only failure I had was on a 200 mile return trip with 1000 lbs of floor tile from Mexico in the bed of my 56 PU doing 75mph.

I suspect the failure was just a random bearing failure. I also noticed the bearing was missing its internal seals, may have been a manufacturer failure that Moser missed or it desintigrated during failure.

Personally if I was not trying to keep it stock I would just go with a 9" and call it a day.