Hey guys, I have a 1997 Ford Expedition XLT and was wondering how many watts does the stereo put out. I dont have the high quality one because it doesnt have the subwoofer in the back but it does say premium on the speaker caps and I have a 6CD changer from ford. Also it has 4 speakers right? I want to add some 12s or 15s and was just wondering. Thanks guys.