I got this one, boys...
SWAYBAR SWAYBAR SWAYBAR! The swaybar off of the V6 tiburon will improve handling more than you might think, and it's maybe a 45 minute install if you've ever used a socket wrench before. Click "main" up under the club banner, go to "members," and then scroll down to "member specials;" call up Dwayne at West Broad Hyundai in Richmond, VA and get them to send you a full upgrade set for $106+s/h.
After that, it's up to you! Check out the old main site's DIY and Customizing sections, and ask boatloads of questions - we're here to help answer them. Decide what you want to do, and if nobody's done it, be brave... after all, your car only cost a hair under $15k, right? You can't screw anything up too badly.
And if you do something new, write up a DIY and take photos!
Welcome to the club, and good luck!