Here she is in the bay.
Been working on the side windows. The wall moves way to much so I am going to put a reinforcement at the top and bottom to tie the cut uprights to the uncut ones.
The 1x2 is where the tubing will go.I will rivet/glue the tube to the skin of the box.
Randy
About the walls. I think I will go with 1/4" of something.