Not sure how much you have to due to go back 100% OEM ,but that would be my choice,parts would not be to difficult to obtain for your 67 ,if your 67 has original paint then I would not even hesitate to start the process of a true 100% restoration,just because so many of these bike got chopped up, these days the value of a correct stock bike is bringing in big bucks,but the biggest diffrence is when you enter the restoration world of restoring a classic motrcycle, is that you no longer are the owner of the bike you become a costodian a caretaker in a sense of somthing not seen to much these days and is somthing that is respected and appriceated by many that you took the time to due it rite and bring the bike back to its original heritage of the motor company.the choice is yours good luck with your shovel and enjoy it no matter what you decide.