What should i get for my 2000 mitsu eclipse?

Hello guys. this is my first car. Mitusbishi eclipse 2000 rs. nice car. i got a full exhaust magna flow system, Cold air intake, spoiler, rims and inside. I want something else that wiill make under my hood look good or sound good. What can i get!!!. im thinking header. i want good looks, sound, or speed. thank you. please help. once again 2000 mistu eclipse rs