I can't speak for upper shelves. The hubby though, on our Burro
, added a front dinette. He cut the tops off captain's chairs from Goodwill and ordered swivels off the Internet. He attached the chair tops to the swivels and then attached these to the lids on the storage compartments of the front two sections of the fiberglass on our Burro
. We discarded the couch cushions, or at least retired them for us but gave them back to the couple who bought our Burro.
Then we bought a wooden TV tray and used it with the original dinette post between the swivel chairs as the table. Our Burro did not come with a dinette table. PO used a piece of plywood for the bed, so we continued that and made the front dinette. Hubby also added a shelf that flipped out from the sink and over the area behind one of the chairs. That held our microwave
. My pix do not show this shelf though.
Hope that helps.