63K on my '99 GT. A fair number of drag starts, but with the rpm's around 2500. I never power-shift, but I speed-shift a lot. No high rpm clutch-slipping starts. Just noticed a bit of chatter in reverse the other day.
My Fathers 95 GT got 150K approx out of his stock clutch. The machine is at 330K now and is still running great.
Keep in mind though that this car has never been raced once, never taken to the strip, and was meticulously maintained. The thing is practiallcy 10 years old and is gorgeous.
Treat your box with respect [read: dont powershift the darn thing, these arent race cars] and you'll get alot of miles out of it.