Just regarding your transmission, a MAN Kat 1 from 1979 has no low range, a six speed manual box behind a torque converter, exhaust brake and diff locks (no front tho). First is slower than walking pace, exhaust brake holds it there. They were used in part for tank resupply, a German friend said often the Kats would get to the resupply point but the tanks would not
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
No-one suggests they are no good off road, watching them on 16's glide by "normal" stuck 4x4s in the sahara on u tube always makes me laugh. Tight tracks may of course be something else but that's size not capability. Aired down 16's would have a massive footprint.
I still can't get my head round how even once the split rims are dismantled how will the tyre bead get over the run flat ring?
You could have a sun deck over the cab roof creating a sunshade forward over the windscreen a little?
If you wanted some self build inspiration this man's downloadable in English book is well worth it according to many others here. He fit out a container, used it for a bit, went back to address some cold bridges. still going strong
My English book
www.selfbuildmotorhome.com
Container with slides maybe?
![Zetros slide.JPG Zetros slide.JPG](https://expeditionportal.com/forum/data/attachments/495/495527-2d6dc0a0f9574c2ffb6044183bbe4c5e.jpg)