Airlift bags and gear are of the highest quality. They did a good job of keeping my double size F350 from hitting the fenders on big freeway bumps, bridge crossings etc while towing a 21,000+ pound trailer. The empty run of the truck is even slightly better than in stock. The installation instructions were detailed and clear, and the kit required no drilling. Now a word of caution. There are some bolts that are very difficult to reach, require an open-end wrench to tighten, and take about 100 frustrating 1/8 turns each when adjusting the wrench. Non-dual applications might be easier, but with massive dual-leaf packs, an internal dual wheel, and a roll-bar, it takes a while. This is a quality kit, just be prepared to spend some time under the truck.