I am a newbie and I have a 2004 2500 slt regular cab HEMI. Automatic with 4x4 on the fly. What i dont know is what Rear Axle and Fromt Axle I have. I also dont know what gears I could have andif I have a Limited Slip or Posi traction.Accoridng to my owners manual all it says is that 2500 and 3500 models do not require a LSD additive. It also says there is a 10.5 and 11.5 inch rear axle. I always thought there wasa 9.25 in em ( is that for the 1500's )?? Any help would be appreciated. I bought the truck used and is ther also anyway I can get the window sticker for it that the dealer used?