Sounds good! I was really just speculating on how to maximize strength, stiffness, utility and weight in an expo style camper van... suited for myself, and probably not many others! Because it would be light weight, crude, and simple. More like an enclosed custom dune buggy than a modern truck. The Stonefield is an interesting concept. This guy has a few ideas when it comes to custom FG bodies:
https://rqriley.com/product/phoenix-van/
I went through this before I bought the Tundra, and realized that I was only ambitious in imagination, not when it comes to actually doing the work! I don't have any experience building cars and haven't even wrenched much. I'm not shy about doing things I've never done, but I could see being dead before "building my own custom offroad van/camper" reached completion. Heck I even lost steam building the camper for the Tundra! Too many unfinished projects at the moment....
Oh, I've been searching for some detail on how the Rav hybrid drivetrain works and came up somewhere between empty and confused. Any good links?