far as i know i think all the trucks came with 15" and above wheels i think a 60 chevy 1/2 tons wheels are different then a 66 1/2 ton cause the hub caps are different cause 60 rims have clips for the hub caps and 66 didn't have clips it just has 3 or 4 humps/nubs on the outside of the ridge that surounds the bolt holes i think the ones off my 64 had 6 in. wide rims (1/2 ton 2wd)
Nate


Link to my photobucket for pics of my vehicles
http://s238.photobucket.com/albums/ff17/OldIronChevy/