Factory small cap electronic ignition systems also need a computer and a bunch of sensors to replace the centrifugal and vacuum advance functions. One of the conversion systems on the original point-type distributors using over the counter parts would be best instead of buying a proprietary system like Pertronix. What happens when the fancy system craps out 50 miles from nowhere, and all there is in the way of parts is a local jobber? I can walk in and buy the components I use for conversions off the shelf, while the Pertronix user will have to convert back to points or walk home. The big cap HEI will fit- - -it just takes a little BFH work on the firewall.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!