Check a bone yard - see if you can get one out of a wreck...
Thank you for the input! Much appreciated!On 981 mirror can be just snapped out. Look on the back picture here: https://www.ebay.com/itm/2013-Porsc...537967?hash=item3d85f6a16f:g:NOkAAOSweTFci-Jz
there are tabs grabbing the bolt, and then steel ring hodling it all together and creating tension. Don't know if it's the same on 987. And be carefull not too pull the whole thing off the windshield.