Which truck / camp rig is taller (to the top of the camper including roof top equipment) and hauling the same camper: 1. F450 Cab and Chassis with a flat bed, or 2. F450 with pickup style box?
Is there enough room between the inside dually tires on the cab and chassis to allow a camper to sit down between them so it would be closer the frame rails?
This is assuming that a custom flat bed would be designed (if possible) to allow a lower sitting camper