18. The intake we’re using is a dual plane Edelbrock Performer RPM LS1 (part no. 71187) that comes with a dual bolt pattern to fit either Edelbrock or Holley flanged carbs. For ignition, we’re using MSD’s stand alone LS1/LS6 ignition controller, part no. 6010. It’s designed to just run the factory LS coil-on-plug ignition, using the stock crank and cam sensor.