I finally got around to modifying my cap to fit my truck properly... and my needs. I pulled all the skins off to get down to the base frame and did the same to the other cap that I had. I cut out pieces of the framework from the parts cap to widen the one I will be using. There were even some angle aluminum that worked perfectly to join everything together. I widened it 2".
Since I was here and had a camping trip planned I figured that I might as well insulate the cap while I had it all apart. I used the skin from the parts cap to make an inner skin to trap the insulation.
I had some 2" foam so I made a hot wore cutter with a saw horse, a couple screws, some .035 mig wire, and a battery charger. I ripped the foam down to 1" and put it between all the supports.
A couple thousand screws later and a bunch of screwing around cutting and fitting pieces of aluminum it was done. I picked up some static cling window tint to add some privacy. That **** is garbage. I should have just got normal adhesive stuff, but it does it's job for now.
It worked great camping. The temps were down around 30 degrees and it stayed nice and warm in there. I built a mattress platform to get above the wheel well so it was a bit tight to the ceiling, but that helped to keep it warm.