Fabricated shelf
I made a shelf for the space between the firewall and the subpanel. I’m going to put stuff like fuse blocks and all the little boxes on it. Unfortunately, I didn’t take a picture of it clecoed in but I will eventually. It will be riveted to the top firewall angle and the bottom of the subpanel ribs. The aft edge has a bend in order to stiffen it up.
I also took apart the forward upper structure in order to dimple as needed for riveting.