Akmn, I have a Jeep Grand Cherokee Limited with the 6 speaker BA system and my SRT has the kicker. Admittedly I haven't spent much time in the SRT yet and haven't played any CDs in it yet. Yet on the drive home from the dealer I really didn't notice a lot of difference between the two. Maybe a slightly better sound especially on the base side, but not enough to warrant spending a lot of money upgrading. IMHO. Suggest you go to a dealer that's got one with a kicker and listen to it, then decide.