I'm new to the diesel world and I am in the process of buying a new truck. My dads friend has a 2008 Chevy 2500HD with the 6.6 Diesel, Crew Cab with the Z71 Package 2WD. The truck looks really nice and has 135,000 miles on it. I just need some input, what do you guys think? good buy, too much? Not worth it? Please help me out guys I want to get a good truck, I'm definitely buying a chevy though.