Pete, before I'd modify such a cool looking truck to the extent necessary to haul a standard truck camper that's built to be hauled on a standard pickup, I'd at least explore having a custom, removable box built for your truck.
As mentioned already, the bed to cab height on your truck is the big problem. You are going to have to raise the bed of your truck about 15" to get any camper to clear your cab. The Host Mammoth is a basement camper, and is therefore pretty tall already. The top of the air conditioner might end up exceeding 13'6" when it's sitting on the truck if you raise the bed.
I know there are companies that do that kind of custom work, Space Craft Mfg. in Concordia, MO is one. I thought they used to have some pictures of a custom TC on their website, but I don't see any now. That was a few years back. A properly configured box taking advantage of all the room and GVWR available on your truck wouldn't need to extend up over the cab at all. You might even be able to keep your fuel tank.
Just my .02 anyhoo.
:):)
2001 Lance 1121 on a 2016 F450 ‘Scuse me while I whinge.
And for all you Scooby-Doo and Yosemite Sam types………..Let’s Go Brandon!!!