Of all the components used in this assembly the Camshaft is the most expensive.
The most reasonably priced component used on the Atc185s 1983 (d) Usa Camshaft / Valve is the Screw, Flat, 6x20.
twenty-eight components are listed in the schematic for this Atc185s 1983 (d) Usa Camshaft / Valve .