After I installed the Rancho Quicklift coil-over shocks on my '07 a few years ago I have broken a couple of sets of front sway bar end links. I have always replaced them with the stock Motorcraft links. My theory is that the stiffer springs on the Ranchos are putting too much extension pressure on the end links. I also suspect that the end links are restricting the ability of the suspension to travel to the point where the Ranchos can't really provide any additional lift even though they are advertised to lift the truck about 1". I have a set of Moog end links ordered but I am thinking they really need to be longer than stock. I should be able to modify the Moogs by replacing the through bolt and spacer sleeve with longer pieces. Same theory as disconnecting the sway bar end links when going off-road to allow the suspension to have greater travel.