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Oct 15, 2015 | 05:29 PM

#76

Upscale Speed

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From: Springvale, ME

I wonder what the header gains would be with 3.3 gears like us X guys are stuck with? THis is now a future mod for me. In the next year or two I will completely swap my entire exhaust system. However, will these fit the X models? HMMM....

Oct 16, 2015 | 01:00 AM

#77

chuckie311

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From: Las Vegas

they will fit the X with no issue.. someone on here is running them

Feb 26, 2016 | 10:54 PM

#78

Rr1982

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From: Newport MI

Who makes the best high flow cats for a 2010 G37xs?

Apr 18, 2016 | 08:56 PM

#79

Mattlorentzoe

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From: Gwinnett County, Georgia

Quote:

Originally Posted by chuckie311

they will fit the X with no issue.. someone on here is running them

2010 G37x Sedan Z1 Header Z1 High flow cats ARK cat back exhaust Stillen Gen 3 Cold Air Intakes - YouTube

They will 100% not fit a X without modifing the drivers side motor mount. The first header run on the z1 headers driver side hits the motor mount. Only way to make them fit is to shave the motor mount down (which is hollow by the way.) only reason I know this is because I ran into this problem myself. This isn't something I read online. Fortunately z1 worked with me and made it right when I returned it.