Just got my Civic 2 weeks ago and very happy with it. I'm in Australia but since the car was made in Swindon I thought I ask the question here. I'm planning to install double din aftermarket head unit. In the later stage I will add the amp and new speakers. Just wondering what functions will I lose from the iMID unit. Is thee any way (use adapter or rewiring) to retain some functions. Other option will be to get premium sound from VTI-L model. In this way I will gain extra tweeters and sub in the boot and retain all the functions of the display. I'm not sure about quality of the premium system. It will be great if someone could comment on it.