Would this be an upgrade at all for a 03 Sedan? I'm getting a mid pipe from a friend and was wondering if the header would also make some sort of upgrade. I know that the mid pipe from a 350Z would have to be extended.

I also did a Search and came up with nothing.

 

350z headers should be direct bolt on

 

If you are talking about the OEM headers then they are the same as the G35's. No upgrade. Same thing for the Y-pipe.

 

the mid is going to be extended around 8 inches. i got myslf the 350z stillen cat back and it was 8 inches in the mid and 2 inches at the tip. pain in the b**t, but (no pun intended) it was well worth it.......

 

yes I was talking about the OEM header. The reason I want the Mid (B) pipe is to get that coupe/350Z sound on the sedan. Changing that out will give me that sound, correct?

 

Yes, do a search on the terms "coupe mid pipe" and you'll find plenty of hits. It will make your sedan sound more coupe like but not exactly like it. I personally didn't like how it sounded so I just had my huge OEM resonator replaced with a Magnaflow resonator. Shaved about 15-20 lbs. of weight too.

 

If you get on it it will sound little more like the coupe but without the high pitch.