Per Schneider (see https://www.schneideroptics.com/info...6,8-210mm.html ) the 210/6.8 Angulon's cells are direct fits in a #3 tube 7 shutter. I think this means a Compound. The next larger size is a Compur/Copal #3, then a Compound #4. See http://www.suaudeau.eu/memo/pratique..._centraux.html
Have you asked Skgrimes for an estimate? I ask because if you can find the right shutter the only additional expense will be the correct scale for the aperture, and having an aperture scaled isn't very expensive. The big expense will be the shutter. Finding one will be a large headache.