About matching of master back and master cylinder

Nice to meet you. The name is Ryo. I'm doing restore work in Japan. Please forgive me for being the first question and speaking in English using the app. I have a question about the brake system, but now I have the original (maybe) brake system, but I'm thinking of replacing the master back and master cylinder in this photo. The master back was confirmed to be compatible by summit racing, but the matching with the master cylinder could not be confirmed. Also, should I have an...

About matching of master back and master cylinder
Author: RYO5566