Need some advice here. I have a 70 with front disk. The car sat for ???? years before I saved it. I have it running with a fresh 350 and a 350th. But no brake pressure. I have bled the system three times and still no luck. I have a power brake booster w/ master cylinder off a 1977. Since I may have to start from scratch, Will this bolt right in and work if get vacuum to it off the carb.

 

Prop valve probably is gunked up. So you know and not to sound condesending, they all came w/ discs after 70. Yes i think the booster will work.