i may be out of my league posting here as i know more about these complex creatures called women than i do car audio systems, but my stock speakers just arent cutting it anymore... what i do know is i want the best sound quality for my budget and music preference. i am biased to hard rock/heavy metal, occasionally alternative. my budget is no more than it needs to be. my car has 4" speakers stock, are there any good component speakers in this size? or would it be worth it to go to the more common 5.5 or 6.5 speakers? in short, what is ideal for my car? (87 pontiac fiero) thanks!