My '95 Club Wagon with a 351 v8 is feeling kind of vintage these days, but I can assure you it has been an awesome tow vehicle. If I could have changed anything it would have been to put a limited slip in the rear end.
When shopping for a van I had two issues with conversion vans - they are often heavier because of the extras, which reduces their overall load capacity, as well as gives them more weight to haul up the hills, and I do not like the fiberglass top models, because if there was a roll-over I prefer to have a solid top overhead (and I have been in a rollover, so I am not just paranoid
But heck, if you had that awesome red van with the velour interior, why would you ever stay in your trailer?!