If you go GM, you can keep your outer axle shafts... if you go with a Ford one, you'll have to change your outer spindle and axle shafts. Ford's are longer.
Quad 4x4 has them, but I'm not sure of pricing. They're usually higher'n Willie Nelson in an elevator, but usually have it and will stand behind it. Out of curiosity, I looked on Ebay, and there are several sets there for less than $400..... The boneyards will have them, but be careful, as the internally splined hub is from 90.5 to 93, and the outer drilled hub (with eight bolts, like your rear end) is from 90.5 and earlier, which uses they Selectro locking hub. I guess if it works, do you care?
I have sooo much to learn, sometimes I wonder if you guys are speaking Japanese!! HEHE! I really like the "higher'n Willie Nelson in an elevator" Might borrow that one.. Thanks for all the info, I'm gonna have to get to looking for the hubs I need for the single wheel setup, and pray the weather starts warming up!!