[William]

It's an original but may not be original to the car. In production, only the face was painted. Cars built with the VE3 bumper had an adapter riveted to the jack loadrest, usually painted blue.

Just for the record, Chevy did not use the 'Endura' trade name in marketing the bumper. It is listed in factory documentation as Special Front Bumper; the showroom brochure refers to it as 'Color-Matched resilient bumper'. The Canadian brochure refers to it as the 'Astro' bumper.