I don't think that there are any drop in speakers you can use to improve on sound as long as you still have your stock head unit. I upgraded all of the speakers and left the stock head unit in only to discover that i should have invested my money in a new head unit first...I didn't notice any difference in sound quality after the speaker upgrade. I do have a head unit on the way though thanks to Rob....Originally Posted by petrified.rabbit
save your speaker money and upgrade your head unit first.