After much work with no noticeable progress. I finally have some pictures.
Now that the roof was on. I had to finish the bunk area above the cab. I slid the box back 4 ft. And installed a sheet of 16 gauge stainless to the bottom of the bunk area.
Once we got that in place I got a sheet of 16 gauge plain steel and built the front of the box.
Then I gutted the sleeper and cut my hole.