For sale we have a Mallory HyFire 7C Controller.# 674MIt's as easy as plug and play.These HyFire 7C controllers from Mallory make it easy to upgrade your HyFire 7S to a 7C without changing your entire ignition. They're easy to use with push button controls, and they don't require chips for adjustment--simply plug in the new controller and wire up the new features. You'll get three stages of rev limiting in 50 rpm increments, three stages of ignition retard that are each adjustable from .1 to 25 degrees in tenth degree increments, adjustable automatic start retard, and selectable high speed advance slope. Circuitry Digital Controls Ignition Advance Yes Controls Ignition Retard Yes Use with Locked Distributor No Stages of Ignition Retard 3 Controller Activation Programmable Adjustable Yes Adjustment Style Push button LED Ignition Box Required Yes Compatible with Multiple Coil Ignitions Yes Quantity Sold individually. Notes This timing controller is designed to upgrade a Mallory HyFire 7S to a 7C ignition system. The ignition box is not included. 15-pin PC data cable not included and must be purchased separately.