Change the intake.
Alot of people go with JWT popcharger or stillen intake with a Z tube. Both give similar gains and I would go with which ever one you could get cheaper. You will get beter sound and slight performance gain.
Stillen looks very stock.
After that I would go with Exhaust. But if you want something a little cheaper then I would get a plenum spacer or a kinetix V+ plenum. Both result in similar gains. You don't need both.
Also another upgrade would be underdrive pulleys. But be careful. Only use trusted names. Unorthodox racing is the brand most people go with. Also If you plan on having a big audio system I wouldn't get this.
I'm pretty sure your year shares the mechanical fan that mine has. I would swap that out with an electric fan. I used the 14" Mishimoto fan. I got it from
http://www.americanmuscle.com/....html It came with free universal mounts.