Welcome to Stovebolt kbenz. Replacement wheels for "Big Bolts" is a frequent topic of discussion and others that have already pursued that will probably chime in pretty soon. Same on the question for looking at converting the rear to 10 bolt.
I saw your Welcome Centre post and it'd be great if you can provide some pictures and more details about the truck there as that can provide a place for folks to see what you have and hopefully better answer your questions.
