OEM black bumper finish?

[Redsled]

New here. Did a search and didn’t find an answer so I apologize if this has been asked before. I have 91 K1500 sport. I’m restoring it to OEM. What was the factory type of paint/finish on the black bumpers? They had a shine to them but I don’t believe they were clear coated?

 

[MrPink]

Direct from the 2D bumper print I have.

30% gloss black- WA30848