Might try finding a used MDT Crew Cab with 4 or 6 doors and get a hauler bed put on it. An example would be a road gang truck or old prison gang work truck. Interior can be re upholstered to make it comfortable vs the spartan way it was offered. Would allow you to choose almost any 5th wheel.
Bob and sometimes - Nina - a Staffordshire Terrier/a SPOILED pit and her kitty Spaz
2006 Dodge SLT 2500 4x4 Cummins Quad Cab w/AT and 3.73
2007 Salem Sport LE 26FBSRV (TH) w/ my Victory Motorcycle in it or a EZ GO Shuttle cart.