6G Celicas Forums

So, ill admit, when it comes to car audio, im a "super noob" . So I need some advice on what to upgrade first. I have an aftermarket headset with 40Wx4, and an aux input (very impotant because i only use my 60gB ipod to play music). So its not a killer headset, but for the most part it gets the job done. Also, most of my music taste falls into the category of rock/punk/pop-rock/ect. So, now im asking you, what conponent should i upgrade? Im planning on upgrading my audio slowly as im only a poor student, but i just have no idea which conponent is going to give the most bang for the buck at this point. Thanks

P.s. (ST, 4 speaker system, stock speakers)