I've worked on a few of the conversion mini vans, remade for chair access. They cut so much apart underneath it is scary. Some were done just fine. Others, they neglected to seal the raw welds, and things were a mess at 5 years old. Have someone check it out underneath before buying. The fuel and brake lines were rerouted, and rusty. The exhaust is re-routed, plus the entire floor was fabricated and lowered 7-8 inches. Some also have a system to pull the suspension down on the ramp side, this all needs a careful look-over. I would be more comfortable with a full size van with a wheel chair lift in the side. Just my 2 cents.