I have a FIAT Linea MJD Emotion. I would like to add Steering Mounted Audio, Air Bags and Blue&Me to my Linea Emotion to make it an Emotion Pack. What are the possibilities of adding these features? What would its cost be? Alloy Wheels can be installed, I don't think its a problem. But is it possible to install fully foldable rear seats, rear screen in Linea Emotion.