you know where the testing for these would be right, denver, death valley, and probably somewhere near Houston... so get a spy sat and watch it 24-7 and then we'll know for sure.. besides the vortec-max was a little disappointing, as was the new duramax, even the new 1500 with the duramax will be disapointing b/c of the tree huggers, i mean EPA... so they better find some way to stop letting the truck market down or they'll be in the same boat as the swear word... ford