I use a thin piece of plywood between the glove box door and the top of the heater for a shelf, instead of the cardboard box. It's got a noise filter, EQ and CB AMP. I put a (in 1978) cassette in the dash in the hole for air conditioners vents above the ash tray. My dash was cracked so why not, and use a dash cover. Add the glove box light too. The center speaker is for the CB. It has the factory stereo speaker covers with new parts; it took some vice grips to rip some dash metal to fit 3", but it looks stock. Back deck is factory wiring with Pioneers and top covers. I also cover the speaker cones with fabric for a longer life.