Luke wrote:
I also have one of those spoilers, love them, they were used on the SAAB rally support vehicles. The one I have has never been mounted with the part number sticker still on the inside. They are pretty flimsy, so I was also thinking about making a mold to make spares.
When it is an open geometry like that it will not have much stiffness. Once mounted and closed box it will be much stiffer just like when you tape up the top of a box.