I suppose now might be a good time to introduce my take on
Ignition systems. I played with MSD and numerous brands of spark plugs. I found a neat trick on the internet (years ago) where you cup the center electrode and drill a small hole in the outer electrode. I call them "Magic Spark Plugs". The drilling turns the spark plug into a blow torch that directs a flame out into the combustion chamber not all that differently than the CVCC pre-chamber. Of course there are way more lessons learned, especially with PDI!