Edelbrock 303012 Supercharger & Cam Power Package for GM LS3 Rectangle Port 6.2L 2007-2014An Edelbrock Supercharger Kit and COMP Cams Cam Kit is the perfect pairing for performance enthusiasts looking for 850+ HP potential from their GM LS3 Rectangle Port 6. 2L 2007 2014 engines. The FAST Supercharger & Cam Power Package includes a pump gas friendly supercharger pulley for engine break in, initial tuning and general performance driving, while a smaller pulley is included for when maximum power is desired on race fuel or E85. The package