From everything I've heard in the past, the 8v doesn't have it at all (I don't think even as an option) and on the 16V & VR6 TC is standard, regardless of which year.
WRT to disabling it to "go quicker", it only does it's stuff at <25mph, so it's not like the some of these "stability control" systems on BMW's and such where your high speed cornering is restricted because the brakes are applied gently on individual wheels to stop the back from sliding out too much. It might theoretically restrict your take off speed, but from the sounds of things it's not an especially pro-active system, so it's almost certainly doing you more favours than anything else...
What I'd be interested in though: if the car already has ABS, would it be possible to enable traction control by swappin gout the 8V ABS control with a 16V / VR6 control??