After reading various comments about Blue-Job chrome polish I decided to use it on my headers -- reluctantly. I don't mind the blue )actually starting to like it) but there were fingerprints, water spot circles, etc. that were not too attractive.
Anyway, I used almost the entire container of Blue-Job to do about 4inches below the top bend. (I figured that the blue would probably come back anyway even though I had taken the AI off.) It took about two hours but I was pretty satisfied. If you want perfect don't get this product. If you have marks like I did I think you'll be happy.
Attached are some before and after pics.
Safe travels,
Dan