After reading some of your feedback, and updates as to what the actual parts are, that are involved in your swap,...IMHO if you want to retain the 2 bolt aluminum F body master, put a booster behind it, and add a proportioning valve to the system, or if manual brakes are your desired goal, then toss the F body master and adapter plate and use a 70 B body or 70-4 E body master designed for manual disc brake application, and add a proportioning valve, if you wish to try/run the B/E body masters, just say so, and I can supply you with the PN# and specs so that you can make an informed choice regarding the proper sizing/application....I'll assume this is for your 69 Coronet?


mike