Designed to plug and play with MSD Pro-Billet distributors and Holley EFI main harnesses with an ignition connector, such as part number 558-104.

Features:
  • Allows for plug and play ignition timing control when utilizing an MSD Pro-Billet distributor.
  • Designed to plug and play with MSD Pro-Billet distributors and Holley EFI main harnesses with an ignition connector, such as part number 558-104.

    Features:
  • Allows for plug and play ignition timing control when utilizing an MSD Pro-Billet distributor.