Worked to raise the front of my 2009 Silverado 3500 2WD Dually. Made in a professional shop, the old keys came out with no problems, but they had a hard time installing the new keys from this kit. didn't need shock absorbers for my application either. Overall, it's been raised decently to accommodate around 285,7017 muddy terrain, and got them lined up properly too. The ride is a little firmer than factory, as you'd expect, but not terrible.