Not An important concern In any event. While we favor Cummins engines, we’ll label the engine group a toss-up concerning the two brand names. ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​�