I'm looking for a Conversion van with a built in bathroom, and not a porta potie. Iï¿½m thinking a marine toilet. I've had IBS for over 15years and it has been a great hindrance to my daily life and my family's life, especially when trying to travel. So my wife and I are finally looking into getting a van with a bathroom. We found a nice Class B van from roadtrek.com but they are a little large for us and the cost is 65-75K. We have 4 kids so it must fit them as well and I need to use it on a daily basis for going to work.Any ideas on where to find a nice conversion van with a toilet and holding tank that will seat 6. The Roadtrek, http://www.roadtrek.com/van.asp,[/URL] was nice, just a little large. It wouldnï¿½t fit in parking garages and was lousy on gas mileage.