My PO installed a sat radio system in my 87 targa. I now have the thing in the photos stuck at the top of my rear window (second photo is from interior). It looks like somebody tried to get it off and broke one corner. Anybody know how this is attached? I've tapped it to try to unscrew it, but it won't budge. There are no remains of glue where the one piece was broken. Did they drill a hole in the window to install this?
Thanks in advance, Ken
