Hey I have an 07 G35 sport sedan and the y pipe is leaking and sounds horrible and I’m in the market to get a replacement. I’ve been looking at the isr y pipe but I’ve been told the outlet is 3” and I’ll have problems since mine is 2”. Any thoughts on this? Or if I can get recommended a good y pipe that will be a prefect fit. My whole exhaust set up is stock.

 

Honestly I would just get another OEM HR y-pipe, you can get them for a good price now since they are so plentiful in salvage yards.

 

It's probably much cheaper and will last way longer too