66 barracuda trunk

OK all, kind of an old thread, but here's a pic of the piece in question, and the fasteners that hold it on. It is 32" long and is held on by 4 push buttons with crowned heads. Also included is a pic of the underside of my 66 trunk, but as you can see there are no holes to mount this on mine. The piece came from a 65 trunk so I would like to see a pic of the underside of your 66 trunk Jack, to see how it differs from mine!! Please!! Geof