err, does Performance Sound = Bose? I see no mention of Bose *anywhere* in my car.
(by the way, Bose, honestly, is WAY more overrated than it really is... the Wave Radio dealies sound like junk... and the Bose setup in the '01 Caddy STS sounds way crappier than it should, and it'* all overpriced)
10 speakers, not 8, if I'm right... can't forget a speaker behind the felty thing in the front doors where you see the "Performance Sound" emblem...
2 on dash
4 in front doors (2 in each front door)
4 behind rear headrests
Seen my door panel off before while dad was working with a seized up door, and I do remember seeing something. Plus, you can feel the bass coming out of that area.