The Stovebolt Site Forums The Shop Area Engine Shop Which dual master cylinder ??

I must be blind or senial, but which make and year of vehicle could be robbed for a MC that uses 4 wheel drums and power brakes?There's a lot of info here but I don't see an answer to Elmers Queery.I too am interested.Vap Brake and clutch sell virtually any master cylinder for a Chevy for under $100.00 ,I just have to know which one is good.The 73-77 Chevelle one is $35.00 ,rebuilt and a 47-53 AD one is $90.00, just for example.