Unless you have the "Premium Sound System. " If you have tweeters mounted in the A pillars chances are you do. In this system, the 6x9 door speakers are factory Infinity speakers with a "built on" amplifier. As previously mentioned, you can replace with any number of brands, however not sure if factory deck puts out enough watts to run them. You would want to look for one with a low RMS wattage requirement or might have to run an external amp.