Powerlite Socket Bracket - Needs Replacing

Here's a shot of the socket bracket. It's all rotted and needs to be replaced unfortunately. I couldn't even remove the socket screws, still seen attached. The socket was all corroded so I just destroyed the socket and remove it bit-by-bit. Once I can figure out a way to make a new socket bracket I can stick on another mogul socket I have laying around.

As you might have guessed, there's supposed to be a big rubber dome that covers the socket and socket bracket and fills in a gaping hole in the reflector. I need one of those too lol. Otherwise crap will fill the refractor rather quickly. The original appears to have been chewed by whatever was living inside the light.