Originally posted by 02NismoSE-R
I DID SOME RESEARCH ON THE DC SPORT HEADER AND IT IS DESIGNED FOR THE 2004 SE-R. TO INSTALL IT ON THE 02-03 IT MUST BE MODIFIED WHICH I DON'T WANT TO DO. I CHECKED OUT THE APEX'I EXHAUST TOO, IT LOOKS NICE. I ALSO READ THAT THE HOTSHOTS HEADER NEEDS TO BE MODIFIED TOO BECUZ OF THE SECOND O2 SENSOR.
IIRC: The only difference as far as the exhaust system goes between the 02-03 and the 04-05 is the 2nd o2 sensor location. The only thing that would need to be modified would be the extension of the 2nd o2 sensor wires.