A year and a half ago, I sold my 05 2500 more door with the 5.9 Cummins and picked up a low mileage 19 2500 megacab 6.7 Cummins . No emissions on the 05 and the 19 has both the egr and Def - both will get deleted the 1st time wither has a malfunction. Comparing both trucks in unmodified form...