Congrats on the new car! Here are a few ideas:
- I'd agree strongly on the S2000 antenna, since I don't think the GT has the retractable stock one.
- If you really enjoy your music, upgrade that first. My view: do things you'll enjoy while driving before you do the appearance stuff. Start with a nice brand-name headunit, then replace your speakers and finally do amp/subs if you want. Great thing about audio is that you can do it in steps as you get the cash.
- Wheels. Going to 18" or even 17" can make a big difference in both ride and appearance.
- Lastly, if you're stick and want to add performance you can go with the TRD
or AEM Cold Air Intake
, and Trial headers. Not only will they make your car a little quicker, but it'll sound mucho better too.