Cognito has all that available for you on their website. I was going to throw the idler and pitman arm upgrade, 6" rear springs, and UCA relocating upgrade on mine but my direction has changed now. A friend has the I&PA Upgrade and his truck steers so nice and firmly. Makes it almost drive like a brand new truck. The Rear Leafs are def. a nice upgrade especially when you are pushing decent HP to the Rear wheels and want to get rid of Axle Wrap. They are only good till about 500 HPish and then you will need a traction Bar setup.
2012 F-250 XLT/FX4 RCLB 6.7 Powerstroke
H&S XRT Pro Race(550hp/1100tq)/ 4" flopro exhaust/H&S EGT kit/SPE Full diff unlock/S&B CAI/H&S motorsports upcharge pipe kit/ DPF,CAT,EGR,UREA Deleted/Icon 3.5" Lift-Vs 2.0 shocks/PMF DSS w' Bilstein 5100s/Icon Adj Track Bar-upgraded steel bearing/RIGID LEDs/Kenwood DNX570HD w/idatalink maestro/Hertz5x7s/Memphis 12" slim/500.1 JL slash amp/Recon f250 led emblems