I just got my first car (1997 Pontiac Grand Am with 6-Speaker System) but the front speakers are not sounding great and I want to upgrade with some extra money saved up. The door speakers are 4x6 and the tweeters are 1.5" I can only adjust the output levels of the bass and the treble with my faceplate. I am wondering if I should get 2-way or 3-way speaker systems. Please Help thank you