Hey dude, great choice in exhaust! Very classy
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As far as the headers go they actually shifted the exhaust forward a little which stopped the rattling coming from the evap canister. The cross member did vibrate against the exhaust on decel quite alot but I got around it by lifting the exhuast with some washers. A side from that everyhting else is perfect. Sound is loud and racecar"ish". Fitment was great. Install was a bitch lol. Performance gains are certainly noticeable. Also I did just pass inspection and emissions so you shouldnt have to worry about that either.
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let me know if you have any other questions.