is there any Y pipe that fits the stock nismo 350z exhaust cause its 2.5 inching and all the y pipes are 3 inch piping to where it connects

 

Hey buddy. yes. and you can do vice versa, i went with the tanabe exhaust but didnt get the Y pipe, and i am 100% sure you can do the same just switching out for a tanabe Y pipe. dont hold me to it, but im pretty certain you can do it with almost all aftermarket exhaust systems specified for the Z, after me calling around numerous shops and asking anyways.

 

http://www.thezstore.com/page/TZS/PROD/15-6056

tanabe is pretty easy on the pricing too, you should look into the exhaust system.

 

oh, nismo? forget everything i said make some phone calls..