Amp, headunit and speakers. Yes, you can but you'd be better off going for a good Alpine headunit and a good amp and upgrading your speakers. I'd only keep Bose if it is already there - mine has it and it does sound good but I would not go to all the aggro of retro-fitting it. I have replaced my headunit with an Alpine but I am hooked up to the original Bose amp and 9 Bose speakers.



