Got the painting done early.
Plan on getting a sheet of the silver/gold reflective material with the pressure sensitive adhesive on the other side. To put that in the small section of the pan that the exhaust routes directly under.
I will have to update this post with my "clean" knuckles. I spent a good deal of time with a wire brush and rust remover. Need to clean up the mounting features and the mask them off in preparation to the paint.