Junkyard swaps: Rear brake options for 8 1/4 and 8 3/4 axles.

Hello all,
I have a few rear axles here that have no brakes on them. In the past, I'd just go to the nearby self serve wrecking yards and grab some 10" drum assemblies and use them. As the rear wheel drive cars are harder to find, I'm having to expand my search.
I have seen trucks and vans with 8 1/4 and 9 1/4 axles. The 5 lug hub versions usually have 11" brakes. Thats a bit oversized for what I want but it is better than nothing. I once swapped Dakota 10" drums onto an 8 3/4 axle. I could do that again if it comes down to it.
See, I have a 65 Valiant that will get a 3.21 geared 8 1/4" axle. It came to me without brakes. A car this light would be fine with 11" discs and 10" drums. I have a 72 Duster that is getting a 3.55 geared 8 1/4" and it needs brakes too.
I have a fuzzy memory of people adapting Jeep rear discs to 8 1/4" axles. What does it take to make that work? Jeeps and Durangos are common in the yards. Is there a range of year models that I need to search for?
I have a couple of 8 3/4 axles that need brakes too. One has the stock tapered bearings, the other has fixed/non adjustable type bearings. Can the Jeep/Durango discs be fitted to them?
I'm not fixated on any specific type of brake. Drum or disc will work, I just need something that requires no trips to a machine shop and has no no crazy or unusual parking brake cable arrangements.