the Duraspark II ignition conversion. i like these the best as t…

the Duraspark II ignition conversion. i like these the best as they are great for any street car up to 7000RPM and the have an ignition retard while cranking feature which makes them easier to start high compression or hot engines. Dr. Jacobs of Jacobs ignition fame says it is the best factory designed system available!

Owner caption June 2003 · Photo 29 of 35