55charliebird. The crankshaft vibration damper on your 'Bird is a 'Bird only application. The black 'donut' is rubber mounted by design. With time, engine heat, 'Bird under-hood operating temperature, the rubber mount that secures the 'donut' deteriorates. It's common for the donut to move away from the pulley and eventually rub against the lower portion of the 'Bird front engine mount that is secured to the timing chain cover.
As I recall, there are three companies who offer repair of the damper assembly that involves remounting the donut using a vulcanizing process. Two companies regularly advertise in Hemming's Magazine and one was identified within the last year here on the Forum.
Someone on our Forum will be able to recommend one or more of the three vendors based upon their experience.
Hope this helps.
NoShortcuts
a.k.a. Charlie Brown
near Syracuse, New York