Yes I did the search, no I do not know what is correct. The finish chart that you can find on this web site is not clear what finish is on the upper control arm shaft. Is it 30% gloss? thought I read somewhere it was natural unpainted steel but have no idea where I came up with that. I finished media blasting all front suspension parts and have them in primer, waiting for the front end rebuild kit to show so I can make my car a roller again for the first time in over 17 years. I love the media blaster, from trashed to brand new in mere minutes.