Tune-Up Procedures - V8: Ignition: Distributors: Notes
All 1975-76 models are equipped with Motorcraft Solid State Ignition (SSI). Most 1977-79 models are equipped with a Motorcraft Dura-Spark I or II ignition systems. The 1978-79 Versailles is equipped with an Electronic Engine Control I (EEC I) system.
NOTE:
Some 1979 Ford and Mercury 351" W engine equipped models use the Dura-Spark III ignition system.