how rare are power Brakes ?

I would say that about half of the '73 and up cars i've owned were factory power brakes, and maybe 20% of the cars i've owned that were '72 and older were power brakes.

i'd say that's very accurate numbers.

also look at the high end cars like 68-70 chargers. i''d say most had power brakes, though drums. earlier ( than say '72-3?) had more manual brakes, as they were the value priced car, also why so many were slants.. even though the K/H disc were available, not ALL buyes were sold on the tech..

I figure power brakes take less " foot power" , but a drum brake will stop the same whether power or manual!??