likely the majority of 1.5T trucks from the factory would have been sold as "cab and chassis", meaning no bed - 2nd most common would have been flat decks, but the dumpers would have been aftermarket, just the PTO optionally supplied from the factory .... look thru the gallery at the 'medium and heavy' trucks from 48-54 to get some ideas, but don't expect to find many/any with factory [rounded corner] flat decks
Bill
