Incl. Heavy Duty Gear/3-Pin Weathertight Wiring Harness - Carb Approval Pending 
MSD Ignition - Digital E-Curve Distributor P/N 8504 Features:
- Digitally controlled; stand-alone distributor.
- Adjustable electronic advance with vacuum advance
- Select up to 100 different curves through two rotary dials
- High output ignition module for a powerful spark
- Set a rev limit to protect your engine from overrev damage
- Simple and clean three wire installation