Took delivery of a new 2015 1500 ECODIESEL 4 x 4 Big Horn on Friday, September 18. After my '05 ThunderRoad Hemi began to wane on me, I traded her for an '11 Big Horn Hemi. At 116k, she was diagnosed as needing new lifters and cam... I am a RAM fan and needed that prod to give the Eco a try. I had been looking at the Cummings for a while but my type of work didn't justify the added expense. The ECO should fill the bill nicely. I look forward to many years of service.