This system really worked a miracle on my 2006 Duramax. I was starting to give up on figuring out the extra play in my steering, after I had already replaced every single thing in the system. This support kit does work great. Although the install says 1 hour, it did take me longer than that, more like 2 hours working laying on my back. I can't confirm all of the other statements/claims of this kit as I just installed this 1 day ago but I can tell you it does tighten up the steering play. Highly recommend this product.