I have a 17 pro4x gasser. It is stock except exhaust. I'm looking to level the front end and possibly add something to the rear to hold a little more payload. I keep looking online and can't find a level kit. Everything says not pro4x model. Is there any way to just add spacers up front to the strut? I added a leveling kit to my dodge I had before this with no problem. Or do I need to get a lift kit for it? who all has added airbags or something else to the rear to get less squat when loading the bed up?