OK, I just bought a 69 Chrysler 300 last week and the brakes are terrible. I changed out the worn front shoes, but that didn't help. The pedal may move a total of a half inch, and it is rock hard. I,m thinking the booster is bad. What do you guys think? The only other booster I have had to replace leaked air, but I can't hear anything from this one. The car has been sitting for quite a while.

1957 Dodge truck, Snakeskin Green with a little stroker motor. 1964 Plymouth Savoy wagon ( my new project)