Picked one up to use on our '63 Lincoln 430 with BIG Cruisomatic.
Here is article about it on page 41.
https://www.americanradiohistory.com...1973-03-04.pdf
Going to use it with stock distributor points and coil.
It will fire the plugs up to 7,000 RPM with near full current!
It is like early Ford CDI on race 427's.
The other CDI's that look just like it like Mark Ten B are kits reworked by Mark Ten.Smart way to do it.
Has bypass switch to protect it when connecting testing equipment to it.
See pic's next post.