I have a 2005 Kenworth T600 with the c15 cat engine it runs and drives great and the truck is in great condition for the year and miles this truck has 1.2 million miles on it. I had the rod and main bearings done not to long ago it also has a new a/c condensor aswell as a new transmission sycronizer,It also had a new head put on it 500,000 lies ago at the dealership the truck gets about 6 miles to the gallon . It has a bullydog computer in the truck right now that i paid over 2000 for i will be willing to sell it with the truck but it does come with the truck unless you buy it seperate for more information please feel free to call me @ 479-461-7268 Thanks for looking and happy bidding. you must provide a 500 non refundable deposit.