I would restore the glove box to its original status (storage cubby hole), get a DIN stereo mount for the current/original location (AA sells one that works great), and just install a standard DIN head unit (AM/FM/XM/CD whatever) with a removeable faceplate (for security concerns). I've been running a 45W x 4 setup similar to this and it works like a champ.
If ya just gotta boom-boom-boom with ya zoom-zoom, you can add an amp(s) in the front trunk, cut up the interior and locate tweets/mids/woofs/subwoofs wherever you can spare/surrender vital real estate (i.e. legroom), than complain the engine's drowning out your tunes. In the long run, it's all a compromise anyway.
