Which 7/8 master cylinder?

I run 15/16” MC’s from DoctorDiff with my manual disks. I’ve used them with the standard 73+ Mopar single piston calipers on 11.75” rotors and DoctorDiff’s 13” cobra style kit with PBR calipers. Works great! I think it’s a really good compromise between pedal effort and the length of the pedal stroke. I’m sure 7/8” would work too, but the pedal stroke would be a little longer.