Stop in for a cup of coffee

Gittin after it today... Pulled the BS Accel coil and some wiring, and the hinges. Had to cut a slot in the top of one of the battery tray bolts to use an impact on it. It was so rusty and tight, but it came apart. Believe it or not, was able to undo all of the lines from the proportioning valve. Pulled the cap off of what I think is the original master cylinder. Actually looks pretty good inside. Pretty sure I can rebuild it and keep the original. Cars like a time capsule.
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Dang it man, I forgot you have an E body Plymouth it appears?