I can not see Cummins lasting much longer in the Dodge trucks. I live only 40 miles from Cummins headquarters and have a few friends that work for them. They feel they are on borrowed time also.
Like you said, nothing wrong with the Fiat based motors but it will surely take a heck of a sales campaign to keep the customers coming in. That motor is legendary.
Chris
I have no experience with the Fiat engine but I know that the Cummins is the biggest selling point for a Dodge IMO. I assumed the time was limited when Fiat bought them but I hadn't heard the rumors till now. I'm sure their engines will work just as well but I guess only time will tell.