1967 barracuda fastback resto or mod?

Danmc77 summed it up well. Although the car is one of the survivors it will never be as collectable as a P or H code car. You can do a lot of modifications that can be easily reversed in the future if you should change your mind as to which direction you choose to go with the car. I think if you were to just restore the car you wouldn`t be happy with it, so go for what you want and simply save your original parts.