Well I have a 2010 half ton with the 7.5" lift with the bells and whistles and what not. I was driving down the road and saw this duramax at a dealership looked like a leveling kit with some black xd 20's with the cooper stt's mud tires. I pulled in a checked it out. it is a 2010 crew cab it has 64k miles on it. The truck looks sweet. It is an LT and when I text drove it I was very surpised how much better riding my truck is than this thing. Was it just this truck in paticular or do most duramax's ride a little rough? I havent ever drove one so I really dont know but it def made my truck feel like a cadillac. It is a 2500 4x4.