8-Inch 12-1X Crank Trigger Kit, BBC, Hall EffectOverview Upgrading to an MSD Flying Magnet Crank Trigger Kit will deliver the precise and reliable signal that a high performance engine requires. This kit gives you the ability to control timing electronically through a FuelTech. At the heart of the kit is the 3 wire Hall Effect Sensor that is easier to set up, less susceptible to EMI RFI interference noise, and less likely to have false signals than other methods (Distributors and VR Magnetic