Painting letters on plenum and cam covers and cleaning metal lines advice wanted

[Corvette95]

After I get my top end powder coated, how do most people paint the lettering in the plenum and cam covers. I know I can't do it with a brush myself, nerve damage doesn't allow me steady hands. Is there a stencil, do most free hand it? I see there was a cut out for this at Stillwater where they spray painted the lettering. Also want advice to clean the alternator and compressor's rough aluminum. I want to bring it to original condition, not above. Also I see a bunch of great looking a/c lines/coolant lines, and air lines and brackets on the Registry. I would like my 90 to look better. I DON'T want full polish or chrome look, but I would like it more "shiney" . I can do a lot with still wool, and have already begun, but there are a bunch of crevasses and non accessible places I can't get to . My a/c lines are still attached. I know this knowledge is here, I can see it in your signatures!!! BTW I have some never dull wadding that just came in I was going to try tomorrow.
Thanks!