[jaak]

Cool, that's good to know... I find it interesting that some of the modules in the car look for the VIN information over the CAN bus to configure themselves. So it's likely a flash contains unique code and/or parameters for models that are called specifically. Which means the possibility exists that the AK and the previous flash are exactly the same for the 5.7. Now an interesting hack would be to fool the flash in to thinking a 5.7 is a 6.1, looking for it to shift at 6200. I suppose the PCM would also have to let it go to 6200...

Ah, to spend an afternoon with one of the programming people at DC... I'd pay for that information and ability to tweak. Thousands.