I was thinking about getting a sound system for my '01 Kia Sportage. Not really looking for something insane, I just want to improve the sound quality and maybe add some more bass to the mix. The car is old and exterior condition is terrible, so I'm not looking to make it look pretty and matching when it's installed really.

What kind of price range am I looking at to put something into it, with and without professional installation? Also, what recommendations in the type of system and specs do you think would work in my car?

If you really, really, really don't think it's worth it to put a sound system in an old Kia Sportage, go ahead and voice the opinion.