Upgrading your engine's distributor is easy when you choose one of Holley EFI’s new dual sync distributors. Holley’s new design incorporates dual Hall Effect sensors which provide an excellent crank and camshaft position signal for sequential fueling operation. It can even be used to provide crank and cam signals for Coil-On-Plug applications! Now available for Chevy, Ford, Dodge, Buick, Oldsmobile, and Pontiac engines! https://www.holley.com/brands/holley_efi/products/ignition/distributors/ | H