removing conversion van powered bench/bed

Reply to Naio: we bought another van from a crafty hippy who lived and traveled in the van for over a year. Accessible from the inside of the van is a queen size futon or thin mattress surface, two drawers underneath and storage area in the lower left. Accessible from the back (with both doors open) is the kitchen. Two propane cooking surfaces (from a big grill I imagine) that when pulled out rests via metal tube on the trailer hitch. To the left is a spot for a water jug above, cleaning/dirty dishes tub directly below and cubbies for cleaning things. To the right are spots for spices, cooking utensils, etc., a fold out flat surface with a swing door that holds more utensils and a paper towel holder. Important to mention that the front and the back of the futon surface (in three foot sections) rises up and secures onto the removed seatbelt anchors up top with cables. This allows the kitchen full access. The inside lowers to hide the drawers and increases the open area behind driver/passenger seats (when it's flat for sleeping it requires supports of wood on each corner). Above the grill's storage area is a flat surface and is very convenient while cooking. The propane tank sits to the right and slightly back from the fold out and utensil storage areas. Bungie chords in convenient spots to hold the utensils and he built two spice holders underneath the futon accessible when it's lifted. Food storage behind the water source on the left. Very sturdy and cleverly built, pretty much used recycled wood and is kind of rough since it wasn't finished or painted which I plan on doing. The "futon" has a support on each side at the wheel well and is anchored to the lower seatbelt anchors with a bracket. I've slept on the bed while my wife drove and it does not move. There is a set of shelves installed behind the driver's seat that angles back before the bed, but that is personal application (we're not sure if we will modify or remove the shelves.