I bought some for the front of my 2004. I haven't put them on yet. Yes they are 5100 for a 2004 4WD. I asked about the rear shocks but they are only good for a for a 1.5" lift according to the sellar. I have a 3" lift in the rear so I will stay with my SkyJacker shocks. Look like nice shocks. If you want you can send him a message about buying just the front shocks. They are $169.90 shipped.