I picked up the FW today and measured the drop on the rear and it went down 3" not the 1 1/2" I guessed before at what point do you considerer air bags?
I tried Timbrens but found Torklift Lower Stableloads to ride better on my 2011 F250. I also added home made Upper Stableloads which helped even more. Squat is about an inch now. I have a relatively heavy pin weight of 2800lbs though.