If you want to go the cheaper route do what I did. Custom xpipe, true dual, 18" resonators with Top Speed axle backs. Good low rumble and I had no complaints at all at my first autox event. Every other Z owner that has heard it really likes the tone.
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Takeda TR3009P Short Ram Intakes, Custom Dual Exhaust, X-Piped with 18" Resonators & TopSpeed Axle Backs. EVO-R Led Third Foglight,
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