According to a tuner the 2011 Mustang GT DOHC 5.0 makes 425hp "officially" but 468hp on an engine dyno. I think it's too high. If the 468hp # held up, that would equate to just over 397RWHP. I can't imagine the Mustang GT going from 270ish RWHP to 397RWHP in just one year.... Here is the [ame="http://www.modularfords.com/forums/showthread.php?t=145155"]original thread[/ame] and [ame="http://www.motorgen.com/forum/showthread.php?p=37978#post37978"]here[/ame] is where I grabbed all his quotes about it. Thoughts? He seems to be fairly reputable :shrug: