Pro-Billet is our most popular distributor and they require an Ignition Controller such as a MSD 6AL or 7AL-2, ACCEL or Mallory Ignition
Control. The distributor has a 2-pin connector that plugs directly into most aftermarket CD Ignition control boxes.

Distributors designed to work with Holley EFI and other sequential EFI systems that support Hall Effect crank and cams sensor inputs.

Ready To Run Distributors have a built-in ignition module, so an Ignition Control such as a MSD 6A box is not required. They’re simple to drop in and connect with three wires (power, coil negative and ground) making them favorites for street rods and muscle cars.