The two wheel drive dually adapters I don't think will work with the 4 wheel drive, as they are cast inward toward the bearing dust cap for support, and some, I believe, are one piece hubs. The standard 4wheel drive hub is one piece on 4500lb axles, and almost impossible to find new, and there are three different casting numbers that I've seen. I've bought some used ones to tide me over a few years. If you use the single wheel hub, you can get adapters to make them work with the dually tracking. Arrowcraft makes the best I've seen, with center piloting, and perfect machine work. They are the reccomended adapters from Dynatrac for use with their free spin hub kits on the Gen II and III duallies. I'd reccomend that over tyring to find a hub and put on your axle, 'cause I've done it twice now, and would like to a third time, but parts are becoming increasingly hard to find. There are also different brake rotors used. Some hubs off of around an '85 chevy will work, but have different stud sizes, 9/16, versus 5/8on the Dodge. A Dana 60 is a Dana 60, but finding the combination of bearing size, brake rotor, and stud size is difficult. Dana might be willing to help you, too.
Arrowcraft
5022 Leafdale Blvd.
Royal Oak, MI 48073
USA
(248) 280-0210