I think you're right.
Bought the truck used from a Ford dealer in Texas. They mounted 4 new tires on the beadlocks and they could not figure out how to mount beadlock under the bed so they put the 5th tire on this steel wheel under the bed. Then they put the original spare tire on the 5th beadlock and set it in the bed. Truck didn't come with the jack either. When I got it home I dropped the steel wheel and put the tire on the beadlock and mounted it fine under the bed. Also found an SVT SuperCab jack online