The hood, door, and rear fender/sails all seem to be the same thickness (~3mm). Tesla has not indicated that they have moved away from 3mm stainless. I don’t think we should assume anything other than the most likely case is that all panels will be the same.
I also agree, best fitment on the...
Bring this post back for relevance. CYBER-Hitch!
https://www.cybertruckownersclub.com/forum/threads/introducing-the-patented-cyber-hitch-full-motion-5th-wheel-hitch-for-the-cybertruck.749/