I just purchased an '05 Tiburon GT auto-stick. I wasn't even expecting to purchase one so i never actually looked into them. I was actually looking for a 328xi. It was strange.. as soon as i drove it, i couldn't help but try to get it. doesn't hurt that it only had 18k miles. I'm looking for suggestions/opinions and help figuring out stereos for this car, and performance upgrades. any help is appreciated.

Congrats on the purchase! Sounds like yours has about as many miles as mine, but I got mine brand new.

Give us some more specifics on what you want to do, how much you want to spend etc. There is anything and everything you'd want out there, but money is usually the limiting factor.