Nice looking parts! When you go to use the Evap-O-Rust, be sure to clean the grease and oil off. It'll work way better that way. Purple Power or some other lye-based product will make short work of it. In fact, if you have a machine shop local, they can hot-tank it and take the rust and grease off in one swell foop. The steel parts of the carb will clean up the same, but don't put the pot metal parts in the hot tank, you'll only get the basket back.
![lol](http://67-72chevytrucks.com/vboard/images/smilies/lol.gif)
You can also buy a chromate kit online to re-plate the carburetor parts, if you end up rebuilding it yourself. It'll look like new if you are careful. I'll be doing that to mine, next rebuild. I'm willing to wait a long time, as I did it about 4 years ago and it's working fine.