I seriously doubt that the Crossfire is made up of old parts left over from MBs that were changed. After all, is it at all logical that the parts bin used for the Crossfire would be large enough to make over 30,000 cars? That is a ton of left-over parts lying around.

Further, when it comes to manufacturing the 320 vs the 350 engine, I'll bet that there isn't a significant amount of cost difference. The heads for the 350 would cost more, but the rest of the parts ought to be in the same ballpark.

The problem is that the guys in Germany have the upper hand and they aren't about to have a U.S. brand car with their latest MB technology. Wanna bet that a MB never has a Chrysler engine?