RE: Reimo Raised Bed Kit
That looks exactly like the kit that I have seen except for the color.  One
of the problems with it is that the supports for the bed (when flat) extend
down into the storage area under the rear seat and make use of that storage
more limited.  I've seen a solution to that, putting two hinged wooden
supports in their place that are notched to catch the front of the seat
box.  The fold up against the bottom of the seat and take up virtually no
room when the bed is not deployed.