What Master Cylinder for 4 wheel disk brakes?

I've done my share of brake conversions but I would never want to recommend something only to have it hurt someone. That said, speedway motors had some very helpful videos in the past. Wilwood if I recall had some good information too.

I may be wrong but in my opinion power brakes, due to the vacuum assist, are not as hard to size as a manual master cylinder simply because the vacuum compensates for the input force. On the Factory Five Racing Cobra I built, which had manual brakes, I think I tried 3 different piston diameter masters before I finally found one that had a comfortable braking performance for the amount of foot force. Nothing worse than standing on the brake pedal and the car feels like it won't stop. Good luck.