The most expensive part in this assembly is the Master Power Assy.
Parts such as the Vacuum Booster: Hose,power Master, Packing M/c Stay, Valve, Check, Boot are included in the Civic 1975 2dr1200 (ka) Vacuum Booster parts fiche.
The most reasonably priced component used on the Civic 1975 2dr1200 (ka) Vacuum Booster is the Screw,pan,4x8.