Holley EFI 556-128 Big Wire Coil-Near-Plug Smart Coil Kit. HOLLEY SMART COIL HIGH HORSEPOWER C-N-P V8 KIT. Do you need precision control over your ignition system? Would your combination benefit from Individual Cylinder Timing Control? Are you experiencing spark issues with your Stock Coils? Are you wanting to convert your Turbocharged Big Block Monstrosity to Coil-Near-Plug? Problem solved, introducing the Holley EFI Big-Wire C-N-P Kit containing everything you need to upgrade your ignition system to handle 5.5+ HP per Cubic Inch. Big Wire Sub Harness- Pre wired with 12ga ...