I wanted to provide some additional entertainment in my 2011 1.6 Sport and sddidd not want to modify the car. I liked your suggestion of using the Bose speaker system and purchased one myself. I must say I am somewhat suprised at the quality and volume that can be acheived with such a small speaker and I am a bit of a HiFi nerd.
In my case I have fixed the speaker to the transmission tunnel with Velcro which appears to work well well and allows it to be removed for security.
My audio source is my mobile phone which is linked via blue tooth or a cable if I wish to use the radio(with most phones with FM radio the FM won't work at the same time as the bluetooth). I have ordered a case/sleeve for the speaker which has red piping and should match the red dash
