i have the factory bose speakers and i don't have any sail panel speakers. i heard the polks fit perfect. i'm looking for a good 6.5" speaker to put in those sail panels. I have a kenwood head unit. not sure what watt, i'll have to look, but i know it is a somewhat expensive one. it sounds good now with the factory bose, so i just want to add those speakers. I've also heard adding a small amp to the speakers will improve the sound. ?? does the factory bose sub have an integrated amp in it?