Another to the point thread. What speakers do you all recommend to replace the current factory speakers in a 2007 Sedan EX-L 6 cylinder 6 speed manual with NAV/XM/CD, looking to improve the sound quality over factory. The car supposively has the "Premium Audio System" but not sure what that means as far as the speakers are concerned. Can anyone tell me what the factory speakers are (2 Way, 3 Way, NO WAY) Should I replace both the door and rear deck speakers? If so, what brand? How much modifications are required? As with my other post concerning the ipod connection, there are so many threads on the subject it gets confusing. Thanks again.