This is the AirDog I FP-150 fuel system for the 2001-2010 Duramax 6.6L. This system mounts to the frame rail using the supplied sandwich plate mounting system.A 1/2″ draw straw is used to pull fuel from the tank. The supply side is hooked up to the factory fuel line feeding the CP3 injection pump. The return is sent back to the tank through a filler neck tee. This is a 150GPH (Gallon Per Hour) fuel system.