Here ya go, easy to do, I converted my 390 in 69 f250. The hyperlink is a diagram, just click to view. Good luck. Duraspark II Ignition System This type system was used on 1977 to 1984 Ford V-8 passenger car and light truck engines. This article refers to the Duraspark II control module with a BLUE strain relief bushing, one 4-pin connector, and one 2-pin connector. Another version of the system has an additional 3-pin wiring connector, and two YELLOW strain relief bushings. Duraspark II uses a variable reluctance magnetic pickup in place of traditional breaker points. The signal from this pickup is amplified by the control module to drive the ignition coil. The module hold a fixed dwell time, and features automatic retard while cranking to reduce the load on the starter motor. The high voltage ignition coil, wider spaced terminals of the distributor cap, and 8mm silicone insulated high tension wires permit the use of wider spark plug gaps. This results in a more powerful spark which is more likely to...