It should be a really good set when you get it working. I have a 20CC50 (next model year of the chassis with minor revisions) and had a 20BC50 parts chassis (on loan to a friend currently) My 20CC50 makes a picture that is among the better I've seen on a delta-gun CRT set.
DSCN2566 by
Tom Carlson, on Flickr
The biggest difference between the chassis I noticed was instead of a round color IC on a 9PIN tube base-socket the CC uses a chassis-socketed DIP chip (there is something I'd never have expected to exist in a TV till I saw it) for the color.