Don't even need Pertronix. You can use a TFI module from 1990's Ford vehicles and trigger it directly from the points distributor, or build a simple circuit with 1 transistor to invert the signal and trigger an HEI ignition module.
This is true, but the Pertronix units are cheap, easy to install, easy to remove and put points back in, and readily available. The downside I've found from them is that their reliability isn't perfect, but they're definitely better than points!
An OEM TFI or HEI is even cheaper and more reliable. If you splice everything with bullet connectors and keep the points coil with you, it's the same thing to go back to points, with no tools.
