I finally decided to go with Timbrens over Air Bags. I've debated this for a long time and have gone back & forth. My final question is: Is there any reason I can't use the 1 Ton Timbrens on my 2500HD. Part # GMRTT35S vs. GMRCK25S. I also found the GMRCK35S. I believe the first one is the heaviest duty and I might as well go with that. Thoughts?