So my current thinking is a F350 4×4 crew cab. I’m understanding F350 is equal 1 ton. As I’m buying a second hand vehicle specifically for the camper I don’t see any harm in going for the 350 v/s the 250. 4×4 is I’m sure not needed for 95% of what we will do but having the option on some remote road in Yukon or Chile is surely a benefit. We did an off-road training course the other day and it’s striking the capability of having 3 differentials and low gear options. The extended or crew cab will hopefully allow us to take out seats and put in storage boxes for all the kit we need for our adventure. My next line of thought is how to add security to the vehicle.