Quoted from Colsond3:
I’m definitely having an actual backglass made. I was thinking of emailing the guy over at BGresto, but I know they do not do mirroring. Shay does, so maybe he would be able to help me out or point me in a direction. Open to any other suggestions or recommendations on this front.
I believe Rich from www.thisoldgame.com made a real backglass for the guy who made the Goonies retheme. I thought about doing it for my Ash vs Evil Dead and Lost in Space rethemes but ending up going the translite route instead and have been happy with the results.