Gyro, you haven't looked at the ratings in the last 6 months, have you. The 2006 3500 Duramax-6spd allison now has a whopping 26000 lbs. But wait, Dodge will beat that and then Ford will again too! I think if they don't slow down, there will be some frames starting to twist. By the way, I get GM discount, that makes a difference on what I drive. If I had Ford or Dodge discount, I would drive one of those.