Tyvek Thermawrap plus spray adhesive to mount the Thermawrap to the metal walls of the Sprinter, white Tyvek scrim against the metal, and the white fluffy material facing inside the Sprinter.
Butane stove and Primus Classic Trail IsoPro Burner. Butane at low elevations, MSR IsoPro for high elevations.
Steel frame from Zinus
Goal Zero Yeti 1000 from Costco plus Bestek 300W Inverter. Charged while driving.
Flettner Wind Powered Vent plus Rowenta Turbo Silence VU2540 Fan
A safe and economical heater that utilizes diesel from the main Sprinter tank