manual drums to power drums

"Get a master cylinder for a '74 Charger with*manual*disc*brakes. Feels just like power brakes and all you need to do is swap it for what you have now and bleed the brakes."

Does this also apply to drums, fr and rr on 68 barracuda?
Or if a booster is needed, will the manual master cylinder and proportion valve need to be changed also

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