Just contacted Mayo Clinic near me. I was informed that their cut off age for a lung transplant is 70 years old. This is a general rule and I was told that doctors would evaluate my health condition overall and could make an exception. I live in Florida and Florida Hospital has no age cut off. If they believe that you can survive the surgery and recovery your chances of a transplant increases. I have been told that there are some fairly strenuous tests you must pass in the gym as a starter.
Good luck to you