If you do really need the towing package, you could probably find a '08 with what you want or even have one built. With the current incentive difference of $500 dollars between an '08 and an '07, not to mention the problems that were solved in the '08s that you will need to make sure are taken care of in the '07, once you start factoring in depreciation of an '07 compared to an '08 are you really coming out ahead by getting an '07. Just some food for thought.