Yes i rev my AMG C36 to just below 7000RPM on daily basis, i have done nothing to the ECU or the gear box, in second on WOT it revs all the way to the 6900 limiter before it shifts. In third its slightly less as it shifts at 6600 if left to its own.

Here are a few pics of the AMG Head. as far as i know this is stock one.

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Jay,
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-1995 Blue W202 C36 AMG (M) SOLD ;(
-1995 Black W140 S500 (Lady)
-1992 Black W124 E300 (Dima) (Ex-Mosselman
Twin turbo Kit).
-1988 Black W124 300 E 4-Matic.(Nadeen)
-1983 Brown W126 500SEL.(Old Lady)(Sold)
-1981 Gold W123 280CE.(Dareen)(Sold)
http://www.youtube.com/user/jayrasheed