Originally Posted by WWJD

Nissan's have very solid chassis, the Z wouldn't have much hp lose. But 350whp is still like 390 hp to the crank. I think it's doable. Get rid of all the cats, free flow exhaust, bigger intake, throttle body, and ecu tune should get you there. But keep in mind, mid range power output is also very important for NA. You don't wanna give up response and torque for some high rpm power.