I contacted the organizer of the Roadster spoiler group buy to see if he and his manufacturer would be interested in the manufacturing portion. I suspect he will want some assurance on the interest out there. If we get his help than all we would need now is 3D data for the car. The link below could be a lead, says it is maximally accurate but cost about $130 to download.
https://www.cgtrader.com/3d-models/c...e85-coupe-2002
Let's see where this goes.