Aftermarket ignition systems offer reliability and improved performance. This is the D.U.I. distributor from Performance Distributors, which incorporates the coil and distributor in one convenient package. For those who want a stock appearance, Performance Distributors offers Motorcraft Dura-Spark distributors as well. If a dead-stock appearance is what youre seeking, the Pertronix Ignitor ignition module is the hot ticket. It fits inside an Autolite or Motorcraft point-triggered distributor, and no one knows its there but you.