Built a roof rack for the old camper shell, more for aesthetic reasons that to pile with overlanding gear, racks, tanks, containers and so on. More likely a elk or deer carcass, or someone else's junk.
The shell is about 2-3 inches shorter than the cab, which looks odd. The rack is easier than trying to rebuild the entire thing taller. Also hides the roof vent I'm adding, and will still fit under 7' door into attached garage. Goal is super light weight and stone simple.
I wanted 1x2 Al rec tube but all the local yard had was 1x2 channel, so went that route. Built basic outer frame on the uneven floor. Used some shims to get it flat.
Put some gussets in the corners with a large hole to secure straps to. Using spool gun with 0.35 AL wire, on Argon. Welds nice even without cleaning. Ran out of material so moved on to mounting. Put riv-nuts into rack frame and they bolt through from inside. foam gasket.
Next step was to install a 14x14 low profile roof vent. Build a H frame at 14.5 x 14.5 to add to roof structure.
Welded on some tabs so H bolted in instead of welding inside camper. Can weld it all up later when I pull the skin off for other mods. Then cut a hole in the roof.
Installed vent with foamgaskets
Definitely wanted powered ventilation, so bought a cheap $10 fan replacement. I made a simple bracket with adjustability. Since the vent is low profile, the fan didn't fit. I shortened the assembly buy modifying the blade and shortening motor shaft.
installed so lid would shut, but drags on screen below.
Spaced interior screen down a 1/4" and it clears.
Then on to wiring. cobbled together a panel and switches I had on hand. Cut a simple metal panel on CNC. 2 interior light circuits and one for fan. Have to fill that 4th spot with something... Simple single connection to truck.
Last project for weekend was to insulate. Used 1" foam and wrapped edges with foil tape. Friction fit. Some a bit tight. Needed exactly 2 sheets if no mistakes made, because I bought 3 sheets. Previous shell I had like this was insulated, and it made a huge difference. Hopefully with powered vent and insulation I can stall cooler in the early mornings when sun hits my toaster oven.
Installed rack even though not done. it hides vent nicely from side view.