My truck is not lifted, but I use the Bilstein 5100's (fronts work fine with shock made for 2.5" lift, on stock ride height). My feeling is if I level the truck, as I plan, I can use the same shocks.
The 5100 is a heavy duty shock made for lifted vehicles, it's a great shock, it really controls the suspension over bumps, and tames the action of my 8k travel trailer down the road. I'm so sold on Bilstein, I put a set of Sports on my DD 2010 Ford Fusion at 30K miles, it totally transformed the car, it feels like a nice European sport sedan now.
They are pricey, shop around, also replace the steering damper, Bilstein makes a 5100 series damper as well.