The only one of those that makes any sense at all is the EarthCruiser EXP. The new one has a 6.0 GM gas engine with Allison transmission, lo/hi range and locking axles.
2008 Ford E-350 Quigley 4x4 V10 - 164,000 miles
RB50, PH Top, Dual AGM Group 27 Deka, 2000 Tripplite Inv., No Propane or Water Systems
Van Weight 8,100 pounds, added one rear leaf spring, BFG AT KO LT265/70R17 E Tire press 50psi.