You can't undo 100 years of brand rivalry. GM will not allow Dodge trucks to be called "best in class" anything with GM trucks in competition. Can't happen. So... expect the Ram lineup to dissapear. Jeep will be spared as its an icon in and of its own. Chrysler cars/vans might be spared to an extent since buyers of such don't always do head to head comparisons like truck owners do.
But I fully expect to see the demise of Ram trucks if GM takes over. Its like having matter and anti-matter in the same room.
Now... I do see the new F-250, 350, 450, 550/Cummins available in the fall of 2010 from all this once GM tells Cummins how much to get out of this "dodge" contract? Probably with an Allison option since GM no longer controls Allison. And a 6-speed manual. Then watch F-SuperDutys become the king of the hill overnight. Cummins would be selling more engines and Ford would roll over GM trucks like a midnight express.
JMO.