It is - If you have supporting mods.
Remember Injectors, Fuel Pump, Nistune with what you already have.
Check the Hypergear thread.
Auto - I'm pulling 245rwkws on a highlow (GCG 2871) now out of puff. I expect Transmission safe up to 280-300kws.
I have a 34 GTT with Neo motor.
Was 170rwkws stock with FMIC, Exhaust + 7psi