I won't tell too much, but I just talked to my buddy who I sold a crate 6.0L to, LQ4.
He pulled everything out of his truck and installed the Livern turbo, harness and pedal assembly (2003 SS) onto the engine dyno.
Bottom Line: 712HP @ 16psi!!!!
Completely stock engine, except for the cam and turbo of course.

That is awesome!

He ran his other 6L for a long time before the meth ran out and it broke.

later,
allen