A good place to start with the drums is having them inspected for hairline cracks, IF they do have enough material left to turn them "true" again safely. (After buying & checking 7 pairs, I have 3 safe-to-use drums.)
Then, on to appearance...a gentle media-blasting by one of your local machine-shops will return them to something approximating
the original color, and you can preserve that fresh finish by a couple of thin coats of clear polyurethane...get some marked on the can for use on alloy wheels. An alternative would be a clear powdercoat.