Bendix master vac power brake set up

Thanks. Never been a fan of the widow maker single jars anyway. I converted my 63 Dart to front disc and a dual master. When you talk about piston diameter do you mean the bore size? Would I be after something like this if I decided to do this? This would assume I stay with four wheel drums.

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Yes. I would even go under an inch if you can find one. A little lower pedal, but, less braking effort with your foot. You'll need to get a manual pedal rod too. Either a stock one or aftermarket adjustable.