I helped put one in a Bose Maxima a while back. It works well if you want to avoid changing the stock appearance, but its still a compromise in sound quality. Cheaper and easier to just change the speakers and head unit, and the result is much better. If you are reasonably careful, you can save all the Bose parts for reinstallation later. Even the $100 head units these days have BT, Pandora, USP, aux, etc.