Hmm...I'd have to say go with a new exhaust. You're Z looks great already so don't change with a NISMO front bumper, so scratch my previous. Look into an exhaust that will give you a nice bump in HP and give the sound to match the look!
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Jon
Swift | SPC | Stillen | Motordyne | AAM | Cobb | Hawk | Volk Racing | Bridgestone
Green Demon Eyes
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