Also you should upgrade your fuel reg. To an adjustable nismo fuel reg one that replaces the oem one so u dont have to max out your injector cylce and u can bump the fuel rail pressure up so it is all safe. There only $200 buks too from memory mate.
also from memory it possible to make 300kw or close to on n1's with power fc, full exhaust dumps to rear, boost controller, fuel reg, maybe new fuel pump just be safe, small cams + cam gears and bigger front mount BUT most of all it depends on tune and conditon of engine and n1's mate