Hey all you car audio gurus, I have a 1989 F150, and I want to get the best sound out of the audio system possible. I don't mean like crazy amazing blow your mind bass, I just want really good quality, crisp sound... so I can crank the stereo and not get distortion. Currently I have a 200 WATT JVC deck, two infinity 6 1/2" speakers in the doors, and two old 12" subs in the back powered by an older sony amp. It sounds ok, but I still get some crackling when I really crank it and it distorts. I was thinking about maybe ditching the subs for a new amp and 2 more infinity 6 1/2"s. Then running all 4 speakers from the amp. Would this help me by quite a bit or no?? If so, what would be my best choice for the amp?? Anyone else got some other suggestions? I was also thinking about getting some bass tubes to put behind the seats of my truck, that way it will free up some much need room in the cab(I'm 6'4" and its a regular cab) + give me some good bass.