Drum brakes don’t bug me much, but I will admit that single pot master cylinder is an eye opener! Had a customer with a 48 or 49 Plymouth coupe that popped a brake hose, he was an elderly guy and handled her like a dream, cut hard to the right and up a hillside and used the car to slow itself down with the hand brake, I pulled him back down with the hand brake applied to control the roll otherwise he would have got me. Nice old gent , he pinched his line off, filled up the pot and crawled back home and fixed it himself.. he truly loved that car, he never left it set, flat head six and three on the tree. I wound up helping him out with body work later on.. I was concerned about air in the system after that hose popped but he said it was good... he was pretty easy on it all the time .