The 2007 F-350 I just bought still has the factory shocks, and they are in need of replacement. I always like to go Bilstein and I have been looking at the 5100 and 5160s. I do plan on towing with this at some point. FWIW the money difference between them isn't that big of a deal. I just want the best shock I can get, without spending the money on King or Fox. Just wondering if anyone has experience with 5160s in a truck that tows.