Was just looking through CL and came upon these two items. I don't know the sellers, have never seen the vehicles. Together or such it might make a project for someone with the time and space.
4x4 Van - 1981 Ford Quadravan-Just started her up! Bring a trailer! - $800 (morgan hill)
http://sfbay.craigslist.org/sby/cto/1664193199.html
1985 Ford E350 Quadravan 4x4 - $2950 (scotts valley)
http://sfbay.craigslist.org/scz/cto/1666062009.html
Enjoy,
Ray