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I have the springs, used u-bolts, bump stops, front sway bar links, and Fabtech brackets for a dual steering stabilizer setup. You would need to get the drop track arm bracket, pitarm arm, and shocks. It's up to you if you want to use the old u-bolts. Most people recommend using new ones.
I ran 37's with a 18x9" 5" backspacing with very little tire rub on this setup. Keep in mind the leaf springs are for a 7.3l diesel so you will get a little more than 5.5" lift. This tire and lift combo raised my Excursion 7.5" from the stock height. Personally I would stick with 35" tires and you should not have any tire rub.
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