[66-PMD-GMC]

Originally Posted by Captainfab

So you are saying that your neighbor, had a shop install a different model of 10 bolt carrier and gears into a Eaton HO32 housing? I have not heard of this before. Do you have any info as to what the application of the parts are?

For fear of stepping out of bounds and having a forum monitor jump down my throat, I hesitate to mention names of businesses, hint of trying to sell something etc...
However, Johns (the neighbor) truck is a GMC, 65 and as a GMC a leaf rear suspension.
(63-66 GMC was only available with leaf rear)
63-87 rear ends all are a direct bolt in with leafs.
Looking at the photos of Roberts diff and then walking next door and taking a peek under Johns truck, he has a 12 bolt, it was updated by a company in downtown Phoenix that deals with diffs exclusively and has for decades. Very knowledgable folks.
I should have looked at Roberts photos before commenting. My mistake....