Mounting a seat just about anywhere you want one in a van isn't hard at all. It's pretty basic actually, but working out the seat belts may be another story. If you're mounting in an OEM location, even if seats didn't come in your van, the seat belt mounts will probably be behind the upper trim, you'll just have to modify that. I'm speaking of the mounts for the shoulder belt, by the way. Both sides of the lap belt are either mounted on the seat or mounted to the floor............usually.