Update from the last couple days.
Fixed some more of the floor. It was a little bubbly behind the rear wheel wells. I cut out the rot and re sheet metaled it.
Using 3/4 ply wood - 18 gauge sheet metal - bonding glue - 1" pink foam we made the window skins.
And here it is done. We painted them white because the bus will be white in the next few months.
Some of the flooring is done too