This may be old news. I was at a local Dodge here in Colorado Springs talking to the service manager about a body shop. He had a printout from Chrysler that had a list of new models and changes to current ones. The new engine will deffinatly be a 6. 7 Cummins and the transmission will be a 6sp Aisen auto. I believe that Aisen makes the autos for several models already even though they amy be called something else. He wouldn't tell me if it is new for 07 or late o6; I'm guessing that he didn't know. He also didn't have anything to say about performace figures. He said Cummins for sure and no Mercedes except for the Sprinter and maybe a couple of other models. Interesting.