No weak crank. The early GTX and GT did have a weak crank pulley assembly, but they fixed it. The gearbox will see some abuse and they break realtively easy. Not from the forces per se, but the oil overheat, making thehousing expand too much, shearing the bearing mounts, which in turn shear the gears. But it's a matter of driving style really. Some can drive 100.000km without even an oil change, others break 5 boxes per year...
I love it, and I'm taking it to the track tomorrow! Cant't wait!