Alright guys, I'm thinking of getting an new tandem dump truck. I have found a 2007 Peterbilt with a cat c-11 335hp engine and an 2008 KW with a cat C-13 350hp. The Peterbilt as been overhauled and as 340,000 miles and the KW only has 228,000 miles with no overhaul and it falls under the new emission laws. The 2007 does not have any emission laws. Both truck are the same price and in the same condition as far as beds tires and looks. Any advice would be great?