Just be sure the van is set up for towing. By that I mean suspension, axle ratio, brakes, and it would be great if it had a factory hitch. I'm only saying this because I know of someone who bought a new van, 2500 series, and it couldn't handle his 9000 lb. Prowler. After much head scratching and haggling with the dealer, he ended up getting a Yukon XL. I wish you the best of luck with your decision and it's good to see new buyers doing their homework ahead of time. Mistakes can be expensive. Being informed is a good thing.
