Dual master cylinder conversion

[266mopars]

I would like to switch my brake master cylinder to a dual after a failure what would be the best  way to do that ? I do  have a new power booster from the single cylinder hope it can be used but not sure . Thanks
It is in a 1966 charger.

[kab69440]

I swapped a booster/ master from a Diplomat cop car into my '69. Cost $25 and a few hours. Replacement parts available nearly anywhere. You will have to drill new holes in the firewall and reinforcement plate. The driver's side inner fender required a bit of massaging with a ball peen hammer and hollow dolly. Nothing major and barely noticeable.