I am new to the forums. I use my truck for extended trips into the Sierra Nevada mountains (expedition?), usually for more than 14 days. Planning on the southwest soon, to be followed by the Pacific northwest. Would like to do the AlCan highway to AK. but that is down the road. The truck has a sleeping platform with a mattress, 3 way 'fridge, 3 burner stove, and 15kBTU heater.
The Box is heavy guage steel and I am currently equipped with 50 usgals of diesel(@13mpg), planning to add another OEM 50 gal tank, 60lbs of propane hard mounted and plumbed. Water is usually carried in jerry type cans. Offroad navigation is usually performed with USGS topo maps along with a ex-military Trimble trimpak mounted and equipped with an external antenna.
I also use the truck as a base for dirtbike trips and have a 2 1/2T trailer for those ends.
P.S. The truck is ex-marine corps M109A3 2 1/2T with 10k PTO bumper mounted winch. Engine is 465ci turbo diesel, 5speed manual all wheel drive, and a bunch of other details I could list but won't.