I think I remember someone telling me that B&S (Sam Summey) in Hendersonville does parkerizing but you’d need to check with him. He doesn’t seem to have a website, (828) 606-3080 is the contact # I see for B&S.
Spoke to Sam. Very friendly and helpful guy. Unfortunately part of what I wanted parkerized is aluminum. I didn’t know you can’t parkerize aluminum. Guess I’m going with Ceracoate.
Glad he brought that up before I made the drive out that way.