I'm thinking about new speakers and I know I'm getting 6X9's installed in the rear, but what about the front? The guy at Quality Auto Sound said I could install 6" speakers in the door, but I don't know if I could bring myself to cut holes in them not to mention the fact that they would then be down near the bottom of the door. Is it possible to fit 5-6" speakers in the dash in place of the 3" ones? If not, I think I'm probably going get more 3" speakers. Also, should I replace all the speaker wire?