I dunno how you all rag on Bose so much. I have a bose system in my g20 and it sounds pretty fucking decent for a stock system. When I put my eclipse hu in it sounded even better. Granted, I could use more power. I'll be putting in a 4channel and replacing the speakers today.
BTW, my friend has a bmw w/factory 10speaker bose system and I must say that's the best stock system I've ever heard. The base isn't wonderful but you can turn it up pretty loud without distortion.