E.I. 225 Slant 6

I happened to run across some on ebay yesterday and remembered the 1361a number. That is the original Ignitor. I also saw an Ignitor II. They prefix two letters to the number, as I recall. It was only ~$80, whereas they used to go for ~$110. Maybe since the Ignitor III came out, they are being surplused now. The smoother idle is probably because you were missing before with the points ignition. If so, you should get your money back soon in better mileage. I would go electronic just to keep my hands out of the grub zone where they put the distributor.

For others, if you get a slant electronic distributor cheap, it is almost as easy to use a GM HEI module and associated "external coil", and can be cheaper.