labbe66,
The van bunk is a small pop top that can be installed on any van, it uses the top half of the top bunk, pops straight up and the bed will slide out the side of the van making an awning of sorts over the passenger side doors. It is in the prototype stages at the moment. I have started on one one a astro van. Your more than welcome to come up and check it out. i am not that far from you. The top bunk shells are fiberglass with balsa wood/ glass mat core. They are very rigid for there weight.
Derek