8-channel capacitive discharge ignition and coil kit designed for high cylinder pressure, high horsepower engines running coil-near-plug ignition. Introducing MSD's PRO 600 CDI 8-channel capacitive discharge ignition. Designed for coil-near-plug engine management systems such as Holley EFI, GM LS platforms, and most other EFI systems, the PRO 600 is also capable of easily converting any distributor type ignition into a coil-near-plug system. When you're making extreme cylinder pressure with boost or nitrous on an inductive coil-per-plug ignition, lack of spark energy means you're ...