Well this popped up for sale days after I ordered one from Gearhead with his custom tunes for the 6.0. Didn't have to provide a VIN. So as long as it's unlocked, it should work on any 6.0.
Yeah the tunes themselves are built to your VIN which I'm sure you know now. Either way it is still for sale. Make an offer if you think it's too high of a price.