The size of the truck is not the issue, short bed is. The truck we have was built on an F350 frame, its towing is 24,000. It has the heavy duty towing package with camper package giveing the bed a rateing of just over 5,000. This has been checked and rechecked before the truck was bought. It was custom built for a dealership but never used until I bought it. Granted that it is loaded to the max with every option that could be put on one, tow package, over load springs, air bag's, leather, slide mirrors, brake controll, over sized sway control, so I don't have any problems towing. I have a slider 5th wheel unit, Reece 16k mounted but was looking at the SideWinder for turning.