You can use just about any modern 8 lug wheel on the back. I have 9.50 x 16.5's on the back of my 48-3/4 ton and they fit fine. Its the front that is the challenge. There are a few members of this board that have used the 16" trailer wheels all the way around. Others have taken the old wheels to one of the speciality shops and had the center section fitted to a modern tubless rim, usually 16". I have also heard that the 70's Ford 3/4 ton wheels will work for these trucks with the addition of the hubcap clips.
Ralph
