Does anybody have any experience with these lifts??
I've found one online and I need some advice on what y'all think about them

 

I did a Fabtech 8" 4-Link DirtLogic 4.0 Coilover front with DirtLogic rear and steering suspension running on 38.5" Super Swamper TrXus on my 2013 Diesel F-350 XL Crew Cab Long Bed FX4 and it is great... can't say enough good things about the Fabtech. I use my truck 90% of the time off-road... rough, rocky off-road. The Fabtech smooths out the ride. On the rockiest terrain, the truck drives and handles like a sports car on newly paved tarmac. Some people say Fabtech is a bit pricey... but if you need off-road handling and performance, the Fabtech kit is well worth the money. Plus it is fully re-buildable, so you can maintain it for the life of your truck.