I was told one could also use a 66 B-Body rotor as they were BBC K-H systems anyone know for sure. Althou this seams like a more viable solution as there are more mustang parts suppliers.
The B-body rotor won`t work because the spindles are longer on those cars and more discouraging is those particular rotors are quite rare and expensive. You`re right about the Mustang parts................very plentiful and affordable.