Most people have gone 2 roads...
Performance or Asthetics
Performance - CBE, HFC's, Intakes, Pulleys etc.
Asthetics - Wheels, Headlights, CF, Spoilers/Lips, Stereo
Its which ever is more important to you right now. If you're only looking to spend $1k, then I'd say go CBE. It will give you a nicer tone if you want it to sound right.
Or if your into asthetics, look into maybe modding your headlights, or painting something to make it more original.
It's all up to you, thats the beauty of being the one with the keys.
