Full disclosure- I'm not a fifth wheel guy myself. One potential issue I see is that the sides of the utility body look taller than a typical pickup bed which could lead to clearance issues with the trailer. Raising the hitch itself could allow for clearance, but that then creates problems with the hitch being too high to keep the trailer reasonably level while towing. But if the truck in question is clean, reasonably priced and otherwise capable, removing the utility body and replacing it with a flatbed or fifth wheel towing type body might be an option.
