so i just bought my 05 g35c about a month ago and havent done much. i just ordered my PAC for my ZUNE. as well all know, the BOSE isnt as good as we want it. i used to to have a pioneer deck with RockFoss amp with a MTX 12" sub with Boston Aqustic internal speakers. i want to keep my stock BOSE HU but maybe some new speakers. i read somewhere here that the 6x9's are strickly for bass? i think my system needs some tweeters cause its kinda low. so here is my question:

what kind of amp, 6x9's and tweeters should i get to replace the stock ones? i still have my old amp, sub and 6.5 front speakers. should i replace or add to the existing amp? dont think i NEED a sub anymore, just better system. my friends stock 06 accord sounds HELLA better then the bose!

Thanks guys!