Add to Favorite Sellers. 86403 MSD Crank Reluctor Wheel Kit – Flying Magnet – SBF – Windsor. 289/302/351W – Use with MSD 6/7/8 Series Ignition – Black. Absolutely the most accurate way to trigger the ignition. Powerful magnets are embedded in a billet aluminum trigger wheel. Kits feature special brackets and mounting hardware for a variety of engines. Customer Service & Feedback. So we have a chance to make it right – we want your repeat business! Check out the official Holley Performance. For more great deals!!