I did the same thing as chevoldsmoyota so that I could run the dually wheels I already had but as singles on the rear. I have a 9' stepside bed that I'll put on it if I ever find the time.
http://s305.photobucket.com/albums/...00/?action=view&current=DSCF1040.jpg

http://s305.photobucket.com/albums/...00/?action=view&current=DSCF1041.jpg



'64 swb stepside (gone)
'57 1 ton
'53 phone truck
'59 swb
'46 1 1/2 ton
'68 swb gmc