I have an old friend who has an M109. It's naturally aspirated and still has a sprag front end. He has made it into a camper and I'm happy that he loves it. IMO, its way too heavy for the space you get. That box is awfully dang heavy for its size.
For a pre-made camper, looking at cab-over campers. I can extend the jacks and make my truck "convertible". I'm really looking that way. I can carry firewood to my parents house this weekend and camp next weekend.