Thanks for all of this, @1000arms! I particularly appreciate the notes about pre/post 2017 trucks and tire differences between the F-350 and F-550.
Having done the math a few times, talking to some folks at Total Composite, and working through what we currently carry in our trailer, the modern F-350 DRW pickup would almost certainly meet our payload need. I had planned to do a bed delete and replace it with an aluminum flatbed.
Going DRW has the added benefit of letting us put a slightly wider habitat on the back.
One thing I wish I could figure out if if the Earth Cruiser Terranova is a super single or an SRW from the factory. And if the latter, how are they keeping it within payload.
That's good to know! Didn't realize that!
The Terranova as delivered is within the payload specs of a modern SRW 350/3500. Based on their assumed payload specs on the website, they intended it to be mounted on a SRW 350/3500.
Keeping it that way once loaded with people and supplies is the end user's responsibility. FWIW, it won't be.