Hi guys, I recently bought an 89 Honda Accord lxi and I'm looking to beef up the audio. Right now it's got an after market sony stereo(although it's pretty old for being after market, not in very good condition, the cd player has some issues) with 4 basic speakers, 2 on the sides, 2 in the back. Now I know very little about car audio and I'm on a pretty tight budget so I'm not sure exactly what I should get. I'd like to get a nice looking faceplate, some good reliable speakers and eventually some kind of cd-changer. My budget is around $500. Any recomendations? All advice is appreciated.