Yep,
On the 99+ GT's take it as close to the revlimit as possible. If you look at the HP and Torque curves of the 99+ 4.6 2v, and plug the numbers into the formulas from the Auto Math Handbook, you'll see you should shift into 2nd actually at 6500 ( Redline = 6000 RPM Rev limit is 6250), and 3rd and 4th should be shifted into at 6100 RPM according to my calculations.
Tim
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