I have a 1990 Silverado ext. cab 4x4 truck. I want to put a good stereo in it. I have a real nice detachable face receiver but it is cassette. I want to go with orginal, 4 speaker set up with an amp. The rear speakers can handle 6x9s I think without problem, the front are probably the small round ones (maybe 3-4"). How can I get this so I can crank it up and have it sound really great? I HAVE to keep the inside stock because I have 3 kids and a wife that ride with me at times. So NO big speaker boxes in the seat!! I've gone Nuckin' Futs!