I've been considering switching to Power Brakes on my 79 300/6. I can find just one vacuum source large enough, and that's the one currently feeding the PCV valve. Should I just tee into that line to supply the Booster ? If so, then it would probably be a good idea to replace the PCV grommet on the valve cover, as the original one is showing it's age.

Many thanks !

 

usually the vaccum sorce is on the intake behind the carb, just change the fitting to a multiple "tree" and theres your sorce for the booster