I looked up the article on the Pertronix conversion I mentioned earlier, so here is some more info. The article is in the Spring 2002 Chevy Classics magazine, page 86.
This is a new system from Pertronixs called the Ignitor II electronic ignition. The difference, according to the article, is that Pertronix has added a "powerful microcontroller that provides a variable dwell setting, ultimately resulting in the best-possible spark over the engines entire rpm range." Supposedly, this variable dwell thing is the cats' meow and "really sets the Ignitor II apart from the rest."
I guess we'll see... just wanted to restate that this system is NOT the same Pertronix system lots of people have used.