The inside rear view mirror on my car is atrocious and cracked, I have a NOS replacement ready to install. The issue is the current mirror has two holes drilled in it to attach it to the plastic sun visor plate and threaded receivers. In removing the existing one I have come to find out the metal piece to where it is supposed to clip is absent. I guess my question is does anyone have ideas as to how to either replace the missing piece and /or fabricate one? I’m thinking of fabricating two end pieces out of thin steel that will be secured by the two screws which would be hidden I’m once the new mirror is installed and fabricating a bar to which the mirror can then clip to, which would be held in place by screws at either end by attaching it to the two end pieces. Any insight would and will be appreciated. Tia.