I just did a 570+ car on stock clutch and so far it is holding fine for the time being. Torque is around 450. Trick is to not lug the engine and create a high load low rpm situation when the torque hits. That initial stress is brutal. But eventually the stock clutch will fail.If the tuner torque limits your car during the tuning process, your stock clutch will be fine up to around 530-540whp, which puts the car around 430ish torque. Anything beyond that you are going to burn through the clutch rapidly. At least that is from my elementary understanding.
A better flowing turbo and E are just tools to get more power. The art is in the tuning. See @Jester04