Brake Booster?

Ta-Da!

http://www.performanceonline.com/1962-74-MOPAR-CHRYSLER-DODGE-PLYMOUTH-CAR-POWER-BRAKE-BOOSTER-KIT/

I bought one of these a year or so ago and I love it. I used this and the Scarebird front disc conversion and my car stops a thousand times better than it did when I bought it.

My $0.02 worth.

-m.