You are wasting money paying for a 37 package. Youre gonna spend 7000 dollars to get slightly bigger shocks. Guess what, FORD doesnt want you to know this, the standard shocks will handle 37s. Is there a slight advantage ,of course, but not worth the money. And it’s been proven over and over that with the help of a ratchet strap, you can mount a spare 37 on a 35 truck. You could probably go with a 12.5 wide and save yourself some rubbing and mpg.