8 3/4 help!!!

i have an 8 3/4 from a 53 fargo with the castle nuts, and remove able hubs with the keys with 4.11's or 4.10's also has a perfectly round backing plate mounting flange and 5 evenly placed lugs vs the newer 8 3/4's with the partial circle/ non uniform spacing around...... the shoes are 2 in wide and the drums are 11in diameter i believe, was going to use it on my duster but figured it would be too much work converting the backing plates as new drums are very hard to find.........