Bill, Saw your recent post over on FSJNetwork.com, as well as your generous offer to answer questions over on this forum. Have searched the Injector Tech forum and the FAQs. Under the 'Start Here' have found the detailed write up for phasing the AMC Motorcraft/Duraspark for TBI -- but you say the Holley system has "different phasing requirements?" I have not been successful locating that information. I have a Holley Sniper on my AMC 360, and would like to convert to timing control through the Sniper. Can you touch on the differences required to phase the Motorcraft/Duraspark distributor for use with the Holley system -- or perhaps point to the link? Thanks in advance.