Coming from someone who spent 3 days sleeping in a black van with shade most of the day you will be happy to have those fans. Finding a van with limited selection means many compromises, I didn't want black paint or tan interior.
If you have to have 4x4 I think buying a 10-$14k van and doing a ujoint kit gets you a better result at not much extra cost.
http://redding.craigslist.org/cto/5149264246.html
For the Dodge folks...2000 Dodge Ram Van 4wd - $9000
I have a full custom already built for sale
7.3 w/only 111k
4x4
JR Rodriguez "The Redneck Mexican"