I've got this Motron I've been dreaming about, and I pulled an aluminum V1 cover out of my giant stock of awesome parts.
It looked good, but it wasn't shiny enough. I took about an hour today and went after it with 200, 400, 800, 1000, 00 steel wool, aluminum polish then 0000 steel wool.
It isn't that hard to do a mediocre job polishing stuff, but boy to you get a sweat going. There was some pitting that I didn't get out, I should have started at 100 grit perhaps, but it's shiny enough for me.