I have a 67 with all drum brakes and I am needing a new master cylinder and I have been looking at the new ones with a booster on them and I thought i would post to see if anybody has one on their car.... and are they an improvement or not ?
Thanks Michael

going from a non-booster to a booster is definitely worth it. may need some parts juggling to get linkage from the pedal arm to the booster.

I replaced the single cylinder M\C with a dual M\C & 10" dual booster on my 65. Can't believe the difference. It is almost to good. Bench bleed the cylinder before installing. On the brake pedal arm there are two holes. Use the hole not being used now for the new linkage.