This weekend I went on a test drive in a 2004. 5 2500 short bed, 4X4, quad cab, Laramie with the 325/600. As I was driving down the highway the engine started making a noise. After a couple of miles something made a huge noise and the truck quit running. I pulled over and looked under the hood and could not see anything wrong. So I looked under the truck and there was a hole in the oil pan. I am not sure what happen but I do know that I will not buy that trcuk.