Mines on 122k now and no sign of failure. Theres nothing in the service history about changing a gearbox or clutch so I would assume its not been changed. I am fairly mechanically sympathetic in that I tend to put my foot down at 3k plus and if I change I dont smash it through the box. I also have a Sprint Booster fitted which I have had fitted for over 6 months. The car is a daily but does have a few foot down moments every week.
I forgot to add I also have a lightened crank pulley which if anything should add vibrations.