My drums were so rusty I wasn't even going to try to clean and paint over them. I got the drums from http://www.gmpartsdirect.com
and although the set was ~$150, shipping included, they would have been $130 MORE from the dealership, so that'* how I justified getting new ones. Plus the fact that they would not rust.
Your wheels would look sooooo sweeeeeeeet if you're calipers AND drums were gold.
And don't worry about the paint...If you have two cans anyway. I was able to paint two drums and two calipers with two 11oz cans of paint, and still had some left over. I used a lot of coats though just to be sure they would hold up. It'* rated to 900 degrees F! Keep me posted on your progress.
Check out my page at cardomain in the sig if you haven't seen my calipers and drums. The pics aren't the best, I'm getting a dig. camera soon.