Rebuilt brake booster

Not sure where they source new diaphragms, since that is the main part which fails. The air-valve on the input side is the other item. In my 65 Newport, the booster had a hole where the rubber got hard from gas fumes (w/ today's alcohol), even though I installed an inline carbon filter. That was the Midland-Ross one which is easy to disassemble (Bendix isn't). I couldn't find a diaphragm anywhere. I bought flat neoprene rubber and made my own, which worked when tested off the car but I never tried running it. It probably won't work since I later checked my rubber stock and it had developed cracks just sitting in my garage. Instead, I drilled new holes to mount a 73 Dart booster I had around, which was identical except for the bolt pattern. I later lucked into a new booster on rockauto for $75 (gone). On my 65 Dart, I installed a booster & MC from a newer car which parts can be sourced easier (95-99 Breeze), as you see in my avatar. I had to rat-tail the holes in the Dart stand-off brackets slightly to fit.