dude...what exactly do you need help with?? Help you ask??? Straight up...upgrade your whole system...the end
I suggest a set of Grundig 15 inch PA speakers mounted in the door,left one only, You will have to sacrifice the window and remove the door panel permantly. For the right door, i find its best to fill the doors interior with concretem to prevent resonance. the windo will have to stay up though. In the dash, just get yourself a walmart clock radio, but one with large display. the ones with the large displays have better frequency response. Amplification is simpl for the vehicle.Just buy one of those 3KW a/c inverters, mount it on top of the car for best cooling. run the speaker outs from the invertor, (they look like a plug in) straight to the speakers.That will give you a 60 Hz sub bass note at all times ..... for proper imaging, I find it useful to get a set of seats from out of a fiero, they have the speakers in the headrest. jsut bolt them in place of your factory seats, will drop right in with no modigfications, except for the bolt patterns. these speakers can be run right off the clock radio output, just wire them up in mono, they have there own built in digital signal processor to extract the stereo information.. A final suggestion would be to reduce the volume of the interior cabin, this is easily accomplished by mounting 55 gallon drums filled with water in the vehicle. Or maybe not..I was bored
ask questions, just dont come on an say HEY IM NEW HELP ME MAKE MY CAR SOUND LIKE A BOOM BOX PLZ... aint gonna work, but anyway whats up and welcome