Looks almost identical to mine! I have the exact same setup as you i.e full understorage as well as 1 extra bay on the passenger side. Mine was originally an activity bus from a tiny school district in Wyoming, then it was owned by a non profit nature center in Colorado for 6 years.
I don't have the stimulators but I did recently pick up 4 Alcoas for a good deal
They will be going on the bus after polish time and new tires.
Best of luck with the build. These Bluebirds with the 8.3 Cummins really are the cream of the crop when it comes to skoolie builds.