I am also building molds for … 2 new versions of my own spoiler design …
You've got my attention. My Pantera is currently equipped with one of your spoilers. I would possibly be interested in a new version … with 2 changes. (1) Fill in the grill opening , and the notch under the grill opening, so it is flat across the front. (2) Add more resin and glass, especially along the bottom, reinforce it, make it 3X as thick, so it will take hard scrapes, bumps into curbs, etc. without damage.
Besides eliminating nose lift, it would make a nice place to mount the front license plate.