Aftermarket ignition ...do you really need one?

I read in Smokey Yunichs book something along those same lines. As I recall, he was big on Amps.
While the CDI systems have an excellent response time, they don't make much for amps. Which is why they went to Multi-Striking. The thing is as rpm goes up, there is no longer time for multi-striking, so around 3000 rpm, they switch back to Single strike, which is now a low-amperage spark, allbeit hi-voltage if the matching coil is used.

After reading all that, I just slapped on the highest amperage coil I could find, with any decent trouble-free ECU, and the factory-type Distributor. It does the job, and in my case has been trouble-free since installation in the very early 2000s,
after my first CDI amplifier system failed.

The coil I selected is a big yellow square-top Accell SuperCoil, that runs the recommended Ballast Resistor, and is wired in the usual way. It seems to run pretty warm, but the temp doesn't seem to affect it, and it will go from very low idle to 7500 or more in the blink of an eye, so I was/am happy. It's pushing 24 years old now.
and when I pull the wire out of the cap during cranking,
it will set the grass on fire
in my neighbors yard.
lol.