Okay guys... Swapping out my 03 blown motor in my coupe for a 04 coupe motor... Looking at the car I got it has some stainless short headers I can see, rest of the exhaust is stock. I haven't got the chance to hear what headers sound like due to my blown motor but since it's out I think my best option is to go back to stock for being a DD. I read some where the revup motor or newer Gs got a redesigned header or better flowing. Maybe I read it on a 350Z forums, can't remember. Probably sell these headers to get something oem.

So is there a better flowing OEM bolt on header fits my 03? I think I will go with some HF cats to get a little louder rumble to keep my G sounding the way they come down the road.

 

HR 07+ motors have better headers, but they require you to switch 2 studs around and for you to use HR high flow cats. I would use the headers you already have.