I'm thinking of doing the same thing. I planned to JB Weld some screws inside the light and make a bracket to go around the TorkLift tubes. The sketch is crude but maybe you'll get the idea I have.
This was our rig in 2013, bought a new truck this year, but haven't hooked on to the fifth yet. Vickie & KlausNewport, MichiganModerator edit to re-size picture to forum recommended limit of 640px maximum width.
You could look at putting a Drawer unit in the bed first, then set the camper on top. These can be purchased through work truck outfitters like... http://www.navahosystem.com/
