Well, I am a PROUD owner of a 2004 Kia Optima LX! I've had NO problems with my car!

-=[UPDATE]=-
I've had a brake upgrade: OEM rotors were switched to an aftermarket cross drilled and slotted rotors from RaceConcepts in Garden Grove CA. You can find them online here: Raceconcepts.net

Here are some pics:

The halogen to xenon (hid) conversion has been done and the install was pretty easy to do!
Here are some pics of what the HIDs look on my ride!

Here's a pic of the driver side when the install was finished:

The difference between the Silverstars (Passenger Side) and the HID (Driver Side)

Final product!

Here is a pic of the 17x7" Motegi DP6 Gunmetal Rims that I just recently purchased.

Just bought a Panasonic MP3/WMA/Sirius Ready CD Player and installed it on Saturday (May 20, 2006) Here are some pics:

June 14, 2006: Installed the two front speakers (from OEM) to 6.5" Pioneer 100Watt Speakers.

April 2007: Recently installed a subwoofer and amp. It's a Rockford Fosgate Punch Series 2 P212S4 and Punch Series MONO Amp - P300-1.

UPDATE: I've recently added a 0.5 FARAD Cap for the Amp.

Here are some pictures:

Again, NOTHING special about the upgrades.. but VERY practical and useful! Being a father of two girls and a child on the way, and working two jobs just to make ends meet, it's kinda hard to devote time AND money to upgrading anything in the car.. so only time will tell what happens next! Stay Tuned!