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If I'm not mistaking (actually I'm not), the 2011 is a S197.
But I see what you mean... 400hp in 05 and 500 in 11!!
lol damn ford.. the new 5.0s really are something else.. I used to think my 13.2 w CAI was quick.. I'd be more than happy with a 12.8 GT straight from the factory! .