Edelbrock part #22744 Max-Fire Coil-On-Plug ignition coil pack is for use with 1997-2014 Ford 4.6L, 5.4L and 6.8L engines with 2-valve cylinder heads. It's a direct bolt-on with OEM DIS electronic controls
Edelbrock part #22745 Max-Fire LS Coil Pack is designed for use with 1997-2013 GM Gen III & IV LS engines. It features a high output design that delivers up to 11% more voltage and 19% more energy over a stock coil