I have yet to see a Cobra dyno for less than Ford said. They all make more. Heard a rumor that they were trying to work out a vibration problem that occurs at speed. Don't know how much of that is true, and the Snake owners I've talked to didn't have any complaints.
Besides, I also heard they were already done with production this year.

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1997 Mustang GT "The Freak" - 13.80 @ 101.70, 2.07 60'
1995 Honda VFR750 - not much @ really fast (actual data pending.)
1964.5 Mustang 289
Rice Haters Club Member #13