The original convertible rear seat speakers were mounted in the trunk and the grill mounted through the vinyl well that covers the trunk when the top is up. When the top is down you can't hear the speakers well because the layers of canvas and vinyl just smother the sound. That's why I did the 5 x 7s in the convertible piston covers. Repros are available if you don't want to cut originals. The kids don't mind sitting next to the speakers, as long as I play music they like!

The subwoofer is an Infinity BassLink in the trunk, and is a detachable and very compact 10" sub. It's not so big that the car shakes, rattles and rolls from bass, but 200w puts out a nice bass kick. The Pioneer head unit has auto level control, so the volume tapers down at a traffic light, back up when driving, including the subwoofer.

Door speakers were not a factory option in the Firebird. Kick panel speakers were, and you can also buy stereo speakers to fit the speaker cutout in the dashboard.

There are a lot of options, but sound is a very personal preference.

I second the negative on the Sony. I bought one of those a couple of years ago and thought it was great, because it plays MP3s, but the sound was never impressive. Even upgrading the speakers didn't help. Bought a Pioneer DEH-P9400 for the 'bird, what a difference! No more Sonys for me!

The Custom Autosound are a classy way to go if you want a truly stock look. I don't mind unclipping the harnesses once a year when I need to.