ssmrico wrote:they said the x pipe kit might be short on the m37
It is if you have AWD, because of the transfer case. I found that out the hard way, when I bought a custom X-pipe kit that fit a RWD model. Luckily, I was able to lengthen it by adding flex connectors. Since the overall length of the system was the same, I had to remove the same amount from the tubes running through the tunnel to the mufflers. Since you have the 2011 Sport model (going by your sig) it's safe to assume you don't have AWD. I'm almost sure the stock Y-pipe assembly is pretty much the same across the whole VQ37 RWD platform; G37 sedan and coupe, M37, etc. Only difference will be the midpipe assembly. The stock M37 and M56 midpipe uses angled flanges to bolt up to matching angled flanges on the mufflers. The G37 sedan midpipe is a slip fit to the mufflers with a pipe clamp. The G37 coupe uses a whole different muffler system. The midpipe pictured on the garageline website shows angled flanges, which to me, is indicative of a M37/M56 sedan application. I don't see it fitting any other VQ37 application. I would be willing to say that it will fit, but if you're not sure you can give them a call and ask.