Love the woodwork in the back of that 1971 F-250!
Well, here's my rig. It's a 1986 M1031 CUCV. It has the original Detroit 6.2L diesel and TH400 3spd/NP205. Not having an overdrive gear wasn't fun, and I couldn't change the transmission due to the pto generator setup that I didn't feel like messing with, so I installed a Gear Vendors overdrive unit behind the transfer case. The pto drives an onboard 12k watt 3 phase generator. It also has a 3 phase air compressor, welder, oxyacetelyne torch, microwave, fridge, 1k watt inverter, 100 watt solar setup, tools for every occasion, hot shower, toilet, sleeping bunk for 2, retractable awning, 18 gallon fresh water tank, and a bunch of other goodies.
The partner rig is a 1988 Jeep XJ. She has a 4.7L stroker, NV4500 5spd, NP231/D300 doubler case, Ford 8.8 rear axle, and a homemade D30/D44 front axle. She gets towed by the big truck, which is there to fix the Jeep when we break her.
Best part is that they are both old enough that they share a lot of the same parts like steering column and headlights!