If you can find one that does not use DEF that fits your needs, BUY IT! I had one of the late model Cummins pollution specials. It spent as much time in the shop as it did on the road. Check engine lights,clogged DEF,new ECMs,new EGRs, reflashes,wiring harness and on and on. Every time it went in and was "fixed", it lost fuel mileage.
The new EGR valves recirculate so much exhaust that they have to be liquid cooled.
The truck dealers and towing companies are very busy with these new pieces of gov. mandated junk.