A couple of years ago I replaced the original concert Stereo in my A4 B6 with a Sony DAB radio. All was great until the other day when a low life broke into the car and stole the control panel for the stereo but not the stereo. I now want to remove the headless unit and put back the original Concert 8E0035186J. How would I go about doing this? Any help or leads ( pardon the pun) would be greatly appreciated. Thanks.