I have a 2008. I installed the bilstiens to level it. Once it was leveled when I would hook my camper up it would "sag" a little since I removed the factory rake. I went with the firestone ride rite air bags. They installed easily with a few wrenches in about an hour and a half in my driveway. I decided not to go with a onboard compressor, I did tee the airlines to both bags together and just use one Schrader valve mounted in the bumper to fill/empty.