I got the Alpine 9815. The bose system is still left in (minus the tape deck of course). A few adapters and bam the Alpine is in! Let me just tell you that this deck makes the sound so much better than the bose deck. I can clearly hear out of the tweeters now. Next step the amp and subs, then replacin the bose speakers. I'm glad I didn't have to do every damn thing at once.