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Hey guys I have a 02 civic dx coupe. I was wondernig if a ebay stainless steel header would fit and work on my dx coupe? I am currently running a short ram intake, and a stainless steel catbackexhaust system with a 100% Titanium canister. I was wondering if I could install a catco high flow cat would i still be able to use the ebay headres and still remain street legal and pass the emissions testing? What else would i need to finish off my I/H//E besdes the headers, also if I put a downpipe or midepipe would that help with horsepower and would I still pass emisions with this?
Thanks,
Gab.