Capacitor Discharge (CD) Ignition?

I'm considering replacing my points ignition system in my '65 Dodge 273 V8. I'm looking at what's available in electronic distributors & systems. I've seen CD systems mentioned but don't know what they are or which one are considered CD's. What do they include and how do they work? I've heard that they work well.
Thanks, Richard Sweet

Don’t listen to anybody here except tool junky, mattex, rusty rat rod and 67dart273.
FWIW, Claudius is is a good fella! He gets a thumbs up from me.
Talk with him

Now on to the subject at hand and my personal experiences with the MSD brand. When I swapped in the box alone it did all they claimed. The addition of there coil helped a bit more since it was a better more power unit than stock. I used a electronic distributor. The MSD bid can be run with the points distributor. Not a problem. IDK about your coil though. I’d up graded it in a flash.