This one was a 4x4

I looked at F-650's and the fact that the 4WD upgrade cost $25,000 was the main reason why I didn't go in that direction. One guy said you can adjust the tongue weight by using the rear airbag suspension if you get stuck on the ramp, but I think by then it would be too late... The Cat engine is unbelievable.

4WD 4500s are much cheaper, but are harder to find.