New technology to go old school When you retro-fit a Ford 46L or 54L (SOHcDOHc) with a carburetor intake manifold, youll need this new controller to handle the ignition chores The controller plugs into the coil packs and sensors of the engine for a direct installation From a Pc, using our pro-data+ software, you can program a custom timing curve, a step retard, two step rev limiter and even a vacuum advance A great system for street rods and retro muscle cars