i have a little box, with 6.5's in it i think that i got from walmart for 15 bucks that fits perfectly between the driver and passanger seat and it sounds really good, if your not looking for high bass performance, and i was able to fix tweeters to the roof of the car on both sides of the car, but i have no headliner at the moment....i get my bass from 2 10's, (checkers $50) that sits right up aginst my back seat in the trunk, and i have roadmasters 6x9's above the back seat, and for no amp it sounds good, it sounds clear as long as i dont have it up so the people 2 blocks over can hear it, even then its perty clear, just get out with your ears ringing (not recomended)