[Bad70sbchevy]

Ignitor I can burn out if you leave the key in the on position. Ignitor II is an improved version that solves that problem. Ignitor III have a rev limitor built into it. I've used the Ignitor II to replace the points on a Bosch distributor and used it in conjunction with a MSD 6AL and blaster coil. Haven't had any issues out of it yet, granted I haven't put a lot of miles on it.