Fuel and vacuum line restoration

[Scott Anderson CLC#26068]

I'm continuing to work bringing back the underhood portions of my '41. My fuel and vacuum lines all function just fine, but have the typical dull look one would expect after a dozen years or so with uncoated lines. Of course there's no end to metal polishing options; choosing one is hard as everyone has a favorite polish brand (as we tend to do with oil, wax, gasoline, etc) but the few compounds I've used just by hand application over the years have all come out shiny but are darker somehow and the end result just doesn't have the brightness or the new type appearance.

Wondering what other folks do to restore their metal lines -? Of course I'd put a coat of clear on them afterwards.

And yes I could just get all new prebent lines but I have the idea it'd be a lot cheaper to just polish the existing ones.

TIA
Scott