Hey, you emailed me asking for suggestions, so here's my list
1. Clear sidemarkers
2. KDM fog lights
3. New Rims
4. Chrome KDM parts to match the chromed windows (if you like Chrome that is) Mirror covers, trunk piece, and door handles are all available
5. New Grille, there's several options out there, I like my KDM chrome/black grille from dreamka4u
6. Eyelids - love mine, my fav mod so far.
7. Springs (I know, I'm a hippocrit for saying so, since I don't have them)
8. OEM type high-spoiler (also not on my car yet) from Spoilerdepot.com (good price & quality, at least so I've heard.
9. Reverse-indiglo gauge faces.
10. Get in on the reverse-indiglo HVAC group buy, we need 1 more, hehe.
11. I love extra gauges, but some people don't. That's iffy, depending on the direction you take your car.
All of those mods at once can cost a lot of money, which you stated you're trying not to spend a ton of. Pick a smaller one to start with (like KDM Clear Sidemarkers) and work your way up to the big stuff (Rims, springs, & spoiler are the only things on that list over $100)
Good luck, and as always everyon on EXD will be here to help.