I love my cvk carbs, and I advise you read the entire thread referenced here before you start. You'll have a clear ideal of what's required to get them dialed with very little fuss. I you get impatient and begin before you've read it all ad understand you'll have some hang ups like the one I experienced. It's a great thread that lays it out very nicely. Some real research went into its production.
You'll need needles, jets (pilots and mains,) clips, and some shims. Full list on that thread.
The carbs are a fantastic upgrade, I ditched my bs38 for them.