Installing Airbags in classic Mustang?
Talk with your dad and find out if there can be a compromise of some sort- for example, does the car have seatbelts? Agree with your dad that you'll take driver's safety lessons, and sign a contract that you promise to always wear your seatbelt whenever you drive. Ask him if that is acceptable, since the classic Mustang doesn't have airbags.
Or, you could buy a newer Mustang that already has airbags instead. The choice is yours. Good luck!