Unique coilpacks / coil on plugs / COPs: Using the four person coils from possibly a 1ZZ-FE or possibly with the NZ series engines this negates the need for just about any igniter(s), spark plug potential customers, distributor cap plus a rotor button. The fourth-technology 4A-GE engine was made from https://4a-ge-engine-for-sale16920.eedblog.com/31424862/5-simple-techniques-for-4age-blacktop-engine-for-sale