Limits of stock LT5 with boost?

[Neat]

Is there a known failure mode when pushing a stock LT5 engine?

In a turbocharged application, if you kept turning up the boost / power until something broke, what do you think would fail?

What sort of power or torque do you think that failure would occur?

Let's assume we are working with a correctly tuned, healthy, stock engine, and that we're using a high quality fuel.

Thanks.