I just purchased a 1989 dually 1 ton pick up cab and chassis (former camper) with only 75k miles. Only issue is the back of the cab is missing and the roof is cut out. I'm weighing the option of replacing back panel and roof panel to return to stock single cab w/flatbed and be done with it. OR choosing a different cab all together, possibly an extended or double cab if I can figure out which cabs are interchangeable with the least headache.. Anybody here have any experience or advice on this topic? All input is welcomed and appreciated