Fiberglass doesn't stick too well to plastic FYI. I seems too, but after time it won't. I would know. I was probably one of the first to do it over 6 years ago. I did it to a perfect dash. Needless to say its still perfect, but I took mine out to wrap it in vinyl leather. The fiberglass was separated on a good portion of it. I scuffed up the plastic really well too.
I drilled holes in the fiberglass and shot in some super glue. Now that works like a charm!
About 50% done, then I sprayed it black.
Done with the pad back on
It actually matches ebony and texture almost perfectly.