It would cost thousands. New wiring harness for the car, amps, speakers, brackets, tons of labor, full interior removal, the list goes on. One of my accounts wanted me to swap the bose stereo system into a non bose 2001 Olds Intrigues. I wouldn't do it. I've put in several thousand dollar multi amp/speaker systems in cars, and I wouldn't do it. Buy some MB quart Component speakers for up front, some good rear speakers, and a high power 50,60Wx4 headunit. Pioneer, Alpine, Panasonic. It will be easier, and sound better