I owned a dodge for 9 years with a cummins in it. The thing really ate brakes and was not that good at pulling off the line. you had to wait for the turbo to kick in for it to have any power. i now own a 02 GMC with the duramax in it. it makes the dodge look sick. it has more power than i know what to do with. the allison transmission is amazing. fuel economy is about 17 unloaded and 15 loaded with a 21 foot ranger and no hill will slow me down to the point the cruise control will kick off of 75. the ride is better than a dodge and a ford. i have drove them all.