A van does not have a tendency to roll over!
Ford Van Lift I drove one as a chase truck in the Baja 1000 two years in a row with no problems. The van was fully loaded and actually had a lower center of gravity than the other chase trucks because the bed is so much lower.
I'll see if I can find a picture of the chase van. It was built by Autofab. Someone makes prerunner fenders for them too!