I don't know.
my original dash had been cut-up for gauges and switches. I took it to body shop and they used "Plastic Bumper" (again don't know which type) and It was difficult to find areas after their work. so it is a "black" plastic of some sort.
the body guy even suggested just priming and painting
FYI, my original dash then disappearded alone with local upholsterer. So GunnerZ has a dash I got of ebay that will need recovering