I have 2 sets of storage boxes for sale.
2 aluminum roof boxes with latches and weather seal. Professionally made custom boxes made to be approximately the height of your roof tent when closed. 32" long, 18" wide, 13" tall. $600.00 for the pair
2 rear mount stainless steel storage boxes made by Aluminess. 22" wide, 24" tall and 13 1/4" deep. $800.00 for the pair.
These boxes have been used very little ( one big trip ) and they are in very good shape. I have a set of aluminum rear boxes, same size and by the same manufacture, if you prefer aluminum instead of the stainless. The cost is less than half of what I paid. Does not include shipping from Boulder, Colorado.
I am on the road and you can contact me by email at email@example.com
I can send more pictures on request.