FAST Dual - Sync Distributors are an easy, drop - in, plug - and - play solution for fully sequential high performance V8 EFI engine applications. Featuring reluctors and pick - ups that have been properly aligned right out of the box, they eliminate the need to set crankshaft reference angles or rotor phasing manually before installation. FAST Dual - Sync Distributors also feature housings that are CNC - machined from high - quality 6061 - T6 billet aluminum. Using high output magnetic pick - ups to generate high capacity, noise resistant, discrete switching signals to the FAST XFI 2.0 and EZ - EFI 2.0 Fuel IgnitionECUs, they deliver extremely precise ignition timing and extra long life.