I have a welder already lined up to take the frame and build a new one to my specs. Going for .125 tube steel for the main rails. Was going to make rear of frame 2 inches longer to facilitate fully separating the bumper box from the body.
I was going to do the underbody insulation with 2 layers of the pink closed cell foam held in with big washers and deck screws,I believe that is how you did yours and it seemed to work great.
For flooring I wasn't going to reinvent the wheel was just planning on 3/4 subfloor ply with penetrating epoxy top and bottom about 6 inches in. My dad mentioned a waterproof plywood product but I didn't know much about it.
Interior insulation will be reflectix near the skin, new 110 yellow wire sandwiched in between, and fiberglass before the interior skins.
At least that is the plan for now or until I learn something new
. Suggestions requested and appreciated!
I hear you on the rebuild, still have a few more hurdles before I even get my new frame back and start heading in that direction. Goal is by the end of December to have interior skins reinstalled and interior painted so that we have a nice aluminum tent for our PCS move to our next duty station.