exhaust system

Hey guys, I was looking to get some upgrades to my 2004 EX, and I was hoping someone could point me in the right direction. I would like to get some Led's (if it's legal, idk) for under the car, and possibly an exhaust to beef it up, but not make it Noisy. As in, I want nice sound but not...

Recently replaced entire exhaust system to my '04 Element, <50k and 7yrs 5 mos. under the catalytic converter warranty. The dealer said that I would have to pay the cost of a new catalytic converter because rust wasn't covered under the warranty, even though there were no problems with it. I...