Some items from this specific schematic: Br9es (ngk Sparkplug), Ngk Spark-plug Br8es, Coil-igniton,#2&3, Coil-igniton,#2&3.
The most expensive part in this assembly is the Igniter.
seventeen components are shown in this Zx750a3 Gpz750 1985 Usa California Canada Ignition exploded diagram.