I have to replace a rusted y-pipe on my 2006 G35x Sedan but wondering if I should get a full cat back exhaust replacement. Other than the cost difference, what do you all think?

Bosal y-pipe for $115 is hard to beat
https://www.rockauto.com/en/moreinfo...=6538&jsn=6538

 

Personally I would find a used OEM coupe mid-pipe on eBay or locally. It's a proven way to increase the overall sound of the sedan with zero negative side-effects like drone/rasp. It's also probably cheaper than the option you listed.

 

I added the coupe mid pipe to my G35 sedan, also installed an HKS muffler. Made a HUGE sound difference and it also saved a bunch of weight! I went with a "Walker" Mid pipe and it fit perfectly!

 

 

Drifter, using a scizzor jack on gravel is absolute cringe...

 

Totally, I added a metal plate to the bottom but yeah, not the wisest decision. I had jack stands under while I was working though. Only place I could work on it and the yard didn’t seem any more stable and the street was possible either.

 

Thanks for the pictures, I didn't think a coupe setup would fit on a sedan

 

I went with the Megan OE-RS when it was on sale after being on backorder forever. I absolutely love it! Not too loud when just cruising around and sounds bad *** when you get on it. No drone at all in my opinion. I researched forever looking for something in the middle of factory and ridiculous. It's the best money I've ever spent on my G besides powdercoating my couple rims.