This is the AirDog I FP-100 fuel system for the 2001-2010 Duramax 6.6L. This system mounts to the frame rail using the supplied sandwich plate mounting system. This system utilizes the factory suction port in the fuel module for suction and plugs into the factory fuel line on the pressure side to supply fuel to the CP3 injection pump. The return is sent back to the tank through a filler neck tee. This is one of the easiest fuel systems to install. This is a 100GPH (Gallon Per Hour) fuel system.