I've got a 2004.5 Volvo S40
Headunit - stock
Four Doors - 4 6.5in SoundStream Picasso Series and 4 TWS.4 SoundStream Tweeters
Amps - 1 ASA 200.2x PowerBass hooked up to the door speakers and 1 ASA 400.2x PowerBass hooked up to the sub
Sub - 12in SoundStream T5
The Headunit in these cars are...