I agree that the current set-up is proven. But so was the M-60 tank, before the M1-A1 came out? So it is proven?, what would compel the truck maker, Dodge, to rest of it's laurels and not advance with the rest in regards to technology? The model-T was damn sure "proven", but they still bung out the model-A. Cummins introduced this engine at least 30 years ago. It went basically unchanged till 98. 5 when the 24V came out. Still in that, it was the same basic bottom end, with a revised valve-train and intake system. I love the engine, but I love old steam engine tractors too. They sure didn't keep those around, and I think it's probably time to switch out the 5. 9L CTD. That does not mean it has to be the end of a Cummins/Dodge relationship. Just it is time to re-tire the old faithful, and move on to another relationship, and hopefully it will be with Cummins. Dodge got lucky with the Cummins. You could not give away those "ugly" first gen trucks. They had been the same for almost twenty years, and although they were tough, rugged, and in every sense a "real truck". The market demanded more then plain potato's and green beans. Somehow, someone in the Dodge camp had the forethought to Aguirre a relationship with Cummins, and off took the sales. But the people that were buying them were still mainly the ones that have always supported Dodge. The first gen was known as a "farmers" truck, no disrespect intended, but that is the segment that bought them. They needed a truck that would run everyday, and make no complaints about it. They were fine with the vinyl seats, rubber floors, ect. , that is what they liked, low maintenance enterer, perfect. But the masses wanted more perks, so the Cummins managed to keep Dodge in the running till 94' when the 2nd generation truck was released. Now Dodge had a whole new market, no longer was it just a work truck, now it was main stream. At the time some might even say they were ahead of the styling curve. Now, Dodge was growing by leaps and bounds. They had everything there was that the truck buying public wanted. New and different styling, nicer ride, and comfort, and at the time the best diesel engine offered, they had the Cummins. Now for the first time they were marketing there truck to people that didn't or wouldn't have normally bought a truck, they were setting a trend. And the Cummins was responsible for a good part of there success, not only could you buy this new , different looking truck. But you could have it with a Cummins. Christ, until then you could only dream of owning a Cummins. And unless you were a truck driver, or had a piece of equipment, you could only imagine what it was like to have one. I think is is a fair statement to make, That Cummins saved Dodge. I think with out the relationship, Dodge could never have taken the market share they now enjoy. And the venture was good for Cummins, they did nothing but continue to put out a great product, and up-hold the Cummins reputation, and good name. But things continue to change, and this isn't the early 90's. The competition has caught up, both Chevy and Ford now have good products. And there is environmental issues that must be addressed. Kind of like the 2-stroke motorcycles or ATV engine. They are being forced out of production, and it doesn't matter how good they were or use to be. It Yamaha, Honda, any of the motorcycle/ATV manufacturers didn't keep up and address the issues of future development, then they would be left behind. So now you see a whole new crop of 4-stroke engines and each maker with there own Tuttle differences, but still conforming to the regs. Same will and must take place in the diesel truck market. I don't think anyone wants to sideline the 5. 9l I-L Cummins, but in order for Dodge to survive in this market, they will have to find a replacement. I see know reason why Cummins could not be apart of there new strategy. But Cummins has made the remakes several times , that they will not build a V-8 diesel. It makes no sense for a company like Cummins to paint themselves in a corner with such a blanket statement like that. There are many reasons for the V design, under hood space management is a key issue, as is aero design. Unfortunately, if Cummins neglect to change with the times, they will not be part of the next generation. That would be sad indeed.