are you really going to sell that bs about chevy's i just replaced a dura max 6.6 @135 k miles to the tune of 10,500.00 for a used engine. Replaced a injector pump on another one and 3 injectors, injector harness @ 3800.00. And this is nothing compared to the ford 6.0 and 6.4 work our shop turns out. Make has little to do with a good truck or bad truck. I comes down to weather it is a good design and how you take care of then. Oh i did have to replace the tappet cover on a 97 dodge 3500 4x4. I had a bad oil leak and it only had 484k miles on it.