2013 F350 DRW moved the Airbags over from the SRW. Don't need the bags for weight, truck sits level with 36RL hitched. The bags smooth out the ride both loaded and unloaded and the biggest thing is that when you come off a bridge or down into a dip and back up, there is none or very little of the bucking up and down and white knuckles.That alone is worth the price of admission.
When unloaded, I run 12 lbs in them and when loaded 73 lbs.when unloaded it takes the sharp bumps out of the back and the truck rides great.
Vaughan & Tracy 2013 RW 36RL, 2013 F350 DRW CC, 2016 Focus. MorRyde IS, MorRyde pinbox, disc brakes, Comfort Ride Hitch. "Life is to be embraced, Grab it with both arms ! "