We run off road tours in Baja, we were looking into one of these for chase, they are the bomb, but they are very expensive, the diesel is the only way to go, but if your planning on going south better check on when (or if) they are going to put the new motors (6.4) in them, since they wont run on Mexican fuel.
They are not inter-cooled either, so the H.P. is low, but IM sure it has plenty enough, a little help from a chip and your good to go!
Talked to a few guys in the last year or so in Baja, and they all loved them.
Quigley is another company building these, prices were close as I remember.
Used was another option, but they are proud of the used ones also, great resale if that comes into your equation. (95 grand for a two year old van with 6,500 miles...)