Removed the inverted fuel sender. Cut a hole in the back baffle. Since there was already a hole in the middle, I couldn't use a hole saw. Had to use a metal cutting wheel on a die grinder and then polish the edges and round it off with a Scothbrite wheel.
Took the baffle from the broken tank project and drilled out the rivets. Getting pretty good at that unfortunately. I was able to reclaim 10 of 12 nut plates. Cleaned up the ring, the plates, and the screws.
Also cleaned the T-407 cover plate and the fuel sender. Polished everything, then marked TOP so many times if I screw this up I quit.