This INTAKE assembly utilises five Washer(6a1)(s) - the highest specified component.
The most reasonably priced component used on the Ct3 1973 Usa Intake is the Washer(6a1).
Parts such as the Intake: Washer, Plate(481), Gasket, Valve Seat (nas), Collar(51l), Gasket (mca) are included in the Ct3 1973 Usa Intake parts fiche.