I found a 370 Z cat back Nismo exhaust will it fit my 37X coupe?

 

Most likely not since the AWD system will be in the way. AWD and RWD cars have different catback systems due to the AWD shaft being in the way. You can get the exhaust custom fitted to the G at a reputable muffler shop, but that's on you. It won't be a direct fit to answer your question.

 

I just put a Nismo exhaust on my coupe. Not sure about the X. The midpipe is too short but you can buy 12” extenders to make it fit. For mine, I bought them but they weren’t the correct diameter so the shop just fabricated the extension.

Overall I hate it, I thought it would be like my IPL exhaust (Which was all rusted and had leaks hence the change) but it’s not. It doesn’t sound good and makes the hissing sound like I have HFCs. Also, my tail pipes don’t stick out enough. Maybe that was just a bad install.

There may be another Nismo exhaust going up for sale soon b/ I hate mine so much.

 

Nismo and IPL exhaust are both different. That's why they sound different. I never cared for the nismo sound.

 

It would seem so. I thought they were basically the same thing (sans the midpipe length) based off of what I read in this forum. I think I’m leaning toward doing a magnaflow exhaust as it seems very close to stock IPL exhaust. It’s got the x-pipe, single canister muffler, etc.