John;
I would like to see pictures of your modified engine. Sounds like you have done some interesting things to it. Your ignition system sounds intriguing. I have converted my 251CI Desoto engine to dual points. And I just got an electronic controller that will still use the points as a trigger but I have not yet installed it. I also have a new high output coil that I will install at the same time.
I do not have a NAPA number for a new water pump but I do have a Car Quest number (NWP-713). Hope this helps. I have several pictures of my car at the following link.
http://photobucket.com/albums/v65/DonCoatney/ Don Coatney
