Correct booster for 1963 Newport?

[SKR8PN]

I am researching for a friend who has a 1963 Newport, and has had no luck finding a re-builder for hers. Can anyone recommend a re-builder, or at least something comparable to replace hers with?

 

[Davea Lux]

www.powerbrakebooster.com, formerly Dewey booster exchange does a good job of rebuilding them.

Dave