Specific coilpacks / coil on plugs / COPs: Using the four person coils from either a 1ZZ-FE or possibly from the NZ collection engines this negates the need for just about any igniter(s), spark plug sales opportunities, distributor cap and a rotor button. Re: ITB Conversion on 16 valve 4AGE https://gunnerlszrn.dbblog.net/4649123/about-4age-20v-blacktop-for-sale