I picked this up somewhere along the way, maybe on this site:

"1-ton w/duals - Although the original dual wheels were 18", for modern replacements, use 8-lug dual 19.5" wheels from a 1975-99 “step van” and 8R19.5 tires. They are also available new from Accuride, Rickson Truck Wheels and other sources. I believe Accuride part number 29015 is what you are looking for."

Is it worth the money to make this swap or shoulld I just buy a set of 7.00x18 tires from Coker and keep the original wheels?

'46 Pickup, '48 Loadmaster stake body, '50 COE C&C, '55 3800 stake body, '57 6400 dump