Hey mate
What i did to my car is all about appearance at the moment
Change the head lights to HIDs (High Intensity Discharge)
1. Low beam (HB4)
2. high beam (HB3) Just get the bulb eg, philips 5000k
3. Fog lights (HB4)
Change the grill~ order one from ebay or something
change the muffler to make it sound and look better
I added blue neons under the seats of my car
If you can be bothered, convert the rear fog lights to brake lights, your car will stand out
Hope this helps
=]