if you go chevy gas before 2020 you buy the 6.0 which is not as strong an engine as the ram hemi. So gas your stuck going ram in a 17 or 18 year model. The reason for wanting a diesel is the torque/HP at lower RPMs. How is a truck motor turning 4000 rpms to pull a big hill with a trailer going to last very long, maybe 200K and done? I get the government is trying to kill diesel but I don't know why they are, but the gas motor just has to turn faster and burn out sooner than a diesel. I am leaning to the diesel for longevity.