I think you are going to struggle to keep the weight below 3.5T. You should look at Iveco, much better for overlanding. Plus you have options from 3.5T to 7.2T. I built an MAN 18T, I bought the truck direct from MAN, had the body made in Austria, into Germany for engineering bike rack works and then back to the UK for internals. My advise is to plan, plan and plan, and then re-plan. 6 months planning is not uncommon.
These guys are good, they do lots of work for overlanding as well as supply the bigger oufits. Very helpful. https://boxmanufaktur.com/en/home/
I have attached a couple of pics of my 5 metre I had done, in construction and then into the paint room.
These guys are good, they do lots of work for overlanding as well as supply the bigger oufits. Very helpful. https://boxmanufaktur.com/en/home/
I have attached a couple of pics of my 5 metre I had done, in construction and then into the paint room.