You guys can argue it all day, I never seen a stock GT-R or Cobra run in a 12, but that doenst mean it hasnt happened. In fact, I've read in an actual GT-R web site that it was running a 13'4. It doesnt mean shit though.
Lets not forget the factory boost being at only 5.8psi (GT-R) compared to the stangs 8psi. Match boost levels and yah might have to reconsider.
Food for thought.