I got the polk from circut city a while ago. They were deffinitly better then stock. But they didn't do it for me. I put the polks in the back doors and put some dbs speakers (component system) in my front doors. Much, much happier with those then the polk. But they are a little more expenssive. If you're looking good bass, I don't think the polks are the way to go. You should hook a component system.