Thanks guys I think our threads may have overlapped. On the wheels, I found a different option that is 19.5 x 7.25 10 lug pattern They are 5.25 diameter so I'll have to have spacers made. Apart from the bolts/nuts which I can sort out once I'm into the project, I am thinking these wheels would work if I can get them in a dually as well? https://buytruckwheels.com/products/19-5x6-hub-pilot-dual-10-hole-p-300-chevrolet-or-gmc-typical Does that make sense?