Hi, ok yes I had a Rostra CC installed by a professional shop. I did not want to attempt it myself. It may not be too hard to do, but the shop quoted about 2 hours and they did a fantastic job. I purchased the Rostra unit and installation from them.Has any one added cruise control to their car? I am looking at a Rostra 250 9504 kit and was wondering how hard it would be to add.