Aftermarket electronic ignition that does away with ignition points in the distributor.
Um, no…123 isn’t an electronic ignition that does away with points. It’s a complete distributor replacement with electronics.
The distinction is quite important particularly for people who don’t know. Ignition issues are common on many old cars including ours. Very often people will attempt to correct these ignition issues with an electronic system such as Pertronix or Crane. These, amongst others are systems that work within and with your existing distributor.
The challenge is, if your distributor itself is not mechanically sound, with some worn parts, no amount of electronics are going to solve your issues. In that case replacing the distributor entirely with the 123 makes perfect sense.
However if you have a distributor that is in perfect condition, installing a small and inexpensive electronic system will do you well.
I had my 051 distributor rebuilt in 2011, and installed the Pertronix at that time. It has been fine for me since then. If and when the time comes that my distributor is worn out it will most likely be replaced with a 123.