I have all my OEM components from two '15 and newer GM HD trucks. I like the leveling kit, just looks better and gives me more clearance for larger tires. When I am hooked to a fifth wheel/gooseneck trailer it goes nose up a little. When I pulling a heavy bumper pull trailer it goes nose up further. I don't have issue with it but it is subjective. The cognito kit replaces the upper control arm and puts extensions on the front shocks for the increase in travel. I am not sure what Rancho does. If you need the upper control arm and so forth. I would give it to you. I am not sure if I have the OEM keys but if your interested I will look through the box.
