Added JBL GTO 939 front door speakers. Much better than stock with better sounding bass and just the right amount of extra mid and treble over the stock system (set the crossover switch to 0db, +3db is too much IMO). Well worth the $100 upgrade, especially at volume levels of 20+. I set the equalizer to +4 Bass, -1 Mid, and 0 Treb. Be prepared to drill new mounting screw holes, as the JBL's plastic magnet surround chassis interferes with the window regulator mounting screw on the front door. In retrospect, I would have Dremeled into the JBL speaker chassis rather than drilling new mounting holes, but I initially didn't want to compromise the return policy in case they didn't fit or sounded bad.