So I'll ask anyone here use these? Seem like the G35,350Z guys use them and had good things to say about them. We know their cat back is a good set up blnewt runs it,

So I might swings at these, at lease the drivers primary wont hit the motor mount like the momentum headers did :/

CZP sells these also

http://www.amazon.com/VQ37VHR-Top-Sp...d/dp/B012C5U1U

 

Not giving up, that's awesome man. I will keep everyone posted on my Stillen header install. The shop was slammed and thats the real reason they couldn't get to it. I read between the lines clearly. Anyways there is a solution for us. The stock headers fit in there no problem and the aftermarket ones are bigger, but not a ton bigger. It's the routing of the tubes that creates an issue. The Stillens look like they will fit and so do those Top Speed ones.

 

I know someone who has stillen headers on his awd sedan so they will fit for sure. Will ask him if the shop had to do anything to make it fit or was it strictly plug and play so to speak.

 

Let us know man.

 

 

I should have my car back tomorrow got update today and initial report was that they fit without modification.

 

Stillen headers installed on my car today, they fit without modification.

 

SO bought Stillens, Just sent the $$ today to Kyle @import parts pro. Vendor FTW great guy have used them a few times now.

 

Do you know what the diameter in piping difference is between the Stillen and the stockies? I'm sure it's larger but exactly how much larger. Congrats on the purchase and good luck....

 

I don't remember of the top of my head but there is thread floating around with the measurements. The collector is MUCH larger. Thanx man I'll be measuring things also

 

2010 g37x I wanna buy the stillen header would I need to modify it or would they fit with no problems

 

There would be no modifications need at all

 

I installed g35/350 Megan style long tube headers on my g37 coupe.. only problem I had was that the bottom tube was actually sitting on the car frame.. so now my car vibrates a bit.

I had to unbolt the engine mounts to raise the car and get the long tubes in and disconnected the steering knuckles/shaft. Just make sure you mark it. It's 2 12mm bolts. ... shorties might be a different story.

 

I'm in a X as well, went with Stillen for the headers as it pretty much the only confirmed fitting headers for us AWD guys. My advice is to do some port and polish work on the collectors if you can before the install. I spent a solid day cleaning up the pooled welds inside the collectors and shaping them down to good free-flowing setup and then ported out the flange to match the piping. Did it do anything, no clue as I didn't get a before dyno and after, but I promise it didn't hurt.