I plan to upgrade my brakes to discs in front and a dual master cylinder. I’ll keep the drums in back. The car has a 318 poly, and it will be used as an occasional around-town driver. I plan on going through Dr. Diff for the components. Our A-body friends say that power brakes aren’t really necessary on the lighter cars, but B-bodies are heavier. Do you feel that power brakes are worthwhile on these old B bodies? If you use manual brakes, what MC bore size do you use?