I am in the process of obtaining a 68 GTO that is what could be called "umolested". Numbers matching engine, verified relatively low mileage, all original body, etc. The drum brakes, including power booster, master cylinder, and maybe drum brake components need attention as the car is unsafe to drive with the current condition of the braking system. So, here's the question. Go ahead and simply replace/upgrade the parts that need repair or rebuild the original parts in an effort to keep original parts as much as possible. If the car had previously been altered there would be no question, but seeing as how it hasn't been, what is your opinion as to how to proceed? Maybe go ahead and replace/upgrade but keep the original parts and store them away is an option? I don't want to make a decision now that will prove to be a mistake some years down the road. Are brake components even really an important part of keeping a car somewhat original? Thanks in advance for your thoughts!!