I've got a spare upper plenum that I'm thinking about polishing. I know it's a huge task. Anyone that has done so, can you let me know what's involved and needed?

If it's too much work, I might end up powdercoating it.

 

I think I have seen someone that did that. Did you Try a search. I think I saw it yesterday when I was on the forum. Hope you can find them. good luck.

I would think its not to bad. Probably need a polisher and some hard work involved.