wheel adapter

Actually, if I whee to do it all over again. I would just get a Dana 60 out of a newer truck wreck, cut off all the brackets and crap you don't need. Narrow it. Then buy the Mopar housing ends and new axles from Dr. Diff that have the 5-4-1/2" pattern.

You can actually do this with the old Ford truck Dana 60's, like, 1970's. I've seen guys use stock 8 3/4 axles too, the spline count is the same in those trucks. You just cut the D60 down to a mopar spec width and use 8 3/4 housing ends. Granted the axles aren't as strong if you do it that way, but you can do it on the cheap. Especially if you can do it yourself. I was getting complete rear axles, drum-drum from my local PicknPull for like $160. I picked up a couple C-body 8 3/4's like that. I suppose if I'd been smart I'd have grabbed one of those D60's before the '70's Fords became more scarce, but none of my cars have the kind of horsepower needed to really justify a D60 in a street car.