Why change the intake, just remove the factory blocking plate from the wheel arch inlet for the factory airbox, put a K&N panel filter in, and its easily good for 450hp. I dont see how those fancy airboxes are worth the money without a second solid investment in some custom snorkel... If its good enough for the Z-Tune/Mines R34 it's good enough for me (and you).
I'll buy your black faced nismo dash if you want.