Why not just buy a F250 with the 6.7 diesel motor, a lot more truck for about the same price. My F250 with the 6.7 gets 19-20 MPG, can tow 14,000 lbs, has 400HP, 800 Ft/lbs. rides like a Cadillac. We call it our Redneck Cadillac.
Ford Explorer or Chrysler 300C to tow with. Tracer Air 238 to be towed. Triumph Thunderbird Sport - with the toy-hauler gone it's at home. Retired very early and loving it.