So I do have the 2004 RX8. The car is in GREAT shape, just that the exhaust isn't as shiney as I would like. So what is the Best exhaust for price, I read here that we don't get much power out of an aftermarket exhaust anyways. And I wanted to get the AEM cold air intake, but AGAIN, is it just for looks and not worth the $300 or so dollars??

 

If you just want to shine it up, get some chrome polish. Read this for opinions:
https://www.rx8club.com/series-i-aftermarket-performance-modifications-23/rx-8-aftermarket-exhausts-summary-16442/

 

You can also get a muffler shop to cut off the old tips and put on some big *** chrome ones but the sound won't be as good as the aftermarket exhaust.