jk, love the small lift and big tires! Awesome truck. I just had a Carli suspension system put on my 09 F350. (www.thecarlisuspension.com) 2.5 King pin top. 4.5" lift with 37's. Did you notice a nice difference after the swap to 4:88's? I have the 5Star 89tune, airaid intake, 3" catback magnaflow.