Electronic ignition upgrade / voltage regulator question

Great! Thanks for all of the replies, guys.
I had stored my car for about 6 years, and recently got her back running. When I did, the ECU fried and had to be replaced. I wonder if those voltage fluctuations from my old regulator did that slowly over time?
I've been meaning to replace my alternator anyway, might as well change the whole system while I'm at it.
What year did they start using the newer system? If I went to the parts store and told them to get an alternator and regulator from a 1970 318 Dart, do you think that would work?