Use only if existing finish is dull/needs touch up. Will not work on otherwise rebuilt booster. You will have to take and get plated. IMO, plating is the better option in the long run.
Si Vis Pacem Parabellum
1967 Starlight black PMD Engineering 400 Auto 1968 Alpine Blue 400 4 speed 1968 Verdoro Green 400 HO 4 speed 2013 1LE 2SS/RS Inferno Orange Camaro.
There is a company in Cincinnati, Partco that will rebuild and gold plate for around $135. They were recommended by a local parts supplier and by a gentleman in the local GTO club.