64 drum drum booster

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I am looking to add a power booster to my 64 c10. I would like to stay drum drum and then get a master cyl that has no "check vales in it" so I can add them externally like the CPP stuff. I have purchased a cap fab adapter and there is a list of boosters I can buy for drum/drum or drum/disc. I want to be able to add a booster/master cyl and then later just add a proportioning valve and new check valve to suppot the disc without starting over. Any suggestions?