Hy DougH6100, it appears your rear wheels are the dreaded RH5s, but you are lucky you already have two 22.5" tubeless wheels on the front. So you only have to find five more tubeless wheels (one for a spare). I am not sure if anyone is still producing new six stud 22.5" wheels, but you should be able to locate some more of them, they do come in different widths so determine what size tires you are going to run before you look for wheels that way you'll know what width of wheel you're looking for, hope that helps.
