[Djmacd]

Also, Consider changing the factory head unit before you change the factory speakers. Running an aftermarket headunit through the factory RF system changes the way the system sounds entirely. It's truly a night and day difference. If after, you feel you need more low and, then add a sub and amp. I'd hate to see you spend all that money on new speakers and not be happy with the sound. Most aftermarket speakers need more power to get best effect. And I don't feel the RF amp is big enough to power new aftermarket speakers.