Ralph... I have a black spoiler that came off my Formula, when it became a fastback.
It's been resprayed, black, with... something, and sanded for a matte finish. It probably needs to be sanded down and repainted to look its best. But you might like it okay as is. Otherwise, I believe it's in good shape.
Make an offer. It'll be cheap. Real cheap. It's been in my spare parts room for at least ten years. I put it on my white car for an afternoon, and decided I didn't like it. So there's that.
The down side is that you may need to come to west GA and get it. Might be a while before I make an event, the way things are going. (Here and elsewhere.)
I'll have to check it and make sure it's still in decent shape. (I can take pics. It looks... just like a spoiler.)
It's currently stored in our box trailer. It was among the last things that were moved, when we moved. It's been waiting for my garage to be built, since spring. Still waiting...