i replaced the fronts with the same 6.5" speakers as i put in the rear, right now i have a kenwood cd/mp3 player in there, as soon as i make it to the store to get a wiring kit, ive got a rockford ravdvd1 to replace it, plays cd/mp3/dvd, it doesnt have regular speaker outputs though, just RCA outs, so im installing a 400w 4 channel amp under the drivers seat (already mounted) to power the speakers, im still debating on subs, ive got a pair of 8's to go in.. but dont really want to lose the space or lose my spare tire