It is a 1983 basic Scamp
. Not much pattern to the shelf arrangement. Just a few sticks cut to fit and 3 pieces of 1/4 inch plywood for the shelves. Sort of like a "Chinese Puzzle". I made the supports and then custom fit the plywood to sit on the supports. Only took 20 minutes or so.
The bottom plywood sits on top of the wheel well and lifts up to give access to the little space below. The rest are spaced to have room for a pair of plastic crates sort of like drawers. You could have any number of shelves.
I am working on a counter arrangement where the upper bunk in front went but it is not finished yet. Again a "Chinese Puzzle" that is removable.