some basic data on kits mentioned recently Jaycar CDI KC 5232 Prog Ign KC 5202 HEI KC 5247 Dick S E CDI K 3307 HEI k 3303 HEI is a rework of an older project as is CDI. HEI was GOOD kit but board now larger. Silicon Chip Mag CDI sept 97 Prog Ign mar 96 HEI june 98 wayne