I also just put a set of Bilsteins in my 2012 F-250 with only 28k and some change and wow! My stock shocks were shot!!! I could easily compress them and 3 off the 4 never rebound an inch. I went a tad different though, and some may think I'm dumb for it. I put the Bilstein 5100's on the front and 4600,s on the rear. The combo is working great. After a call to Bilstein, they advised the 4600's for the rear due to pulling a 5'er and a gooseneck because of the valving, and the 5100's up front for ride. The only difference between the two is the HD status and valving for loads on the 4600, color, and the 5100 can accommodate for lifted vehicles. The ride is greatly improved and pulling the 5er last week was very much improved. Like I said, its a different combo and I normally hate mix matching things, but so far I'm ecstatic with my decision.