Ford 289, 302 Dual Sync Distributor Pro-Billet Dual Sync EFI Distributors With Steel Gear Is Designed To Work With Holley Efi, And Other Sequential EFI Systems That Support Hall Effect Crank And Cams Sensor Inputs MSD IgnitionMSD Pro Billet EFI Dual Sync distributors are available for many popular engine applications and are perfect addition to your fuel injected power plant. While these distributors are designed primarily for use with sequential fuel injection systems that support Hall Effect crank and cam sensor inputs, they can also trigger TBI fuel injection systems. The precision machined shutter wheel design ensures accurate timing, even at high engine speeds. If