125mph speed limiter in 3rd gear? The fact that you mention a speed limiter makes me think you have a stock PCM. If that's the case, 3rd gear is limited to 108mph.
Did I not read something correctly?
Marc
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'00 Trans Am WS6 w/ 25K miles - Lovin' it!!
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RIP '99 GTP w/ 41K miles - Totaled in fire
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RIP '97 GTP w/ 192K miles - Totaled when broadsided