It really depends what you are looking for... I mean if you want a deck, speakers, subs, and amps, 500 isnt gonna get you there... I you dont need a deck, you might be able to stretch it... For the inside speakers go with infinity... My favorite for the price... For subs, maybe go with 2 10s... Alpine makes good, clean subs for not too much, such as E Type or S Type... Then you can match them up with a alpine deck... Thats just one scenario, I need more specifics.
