Let’s talk about the 8-1/4” diff
It is quite possible that I have not seen all of the oddball equipment that Chrysler stuffed into their cars and trucks.
The 8 1/4" axle was widely used and was a durable unit. I do try to refrain from stating absolutes, just that I have not seen them even though I've been junkyardin' and scrapping vehicles for a few years.