Help identify master cylinder

Looks exactly like a DoctorDiff set up with the adapter, same finish and everything. I believe those are 1-1/32”

Mopar Aluminum Master Cylinder Kit

That's what I was thinking because it was with the four hole/ two stud adapter.
I would like to convert to manual for a Viper/Cobra disc/disc deal (Snake Brakes!). Could this be used with my factory disc/drum in the meantime, removing the booster? The pushod attached is a manual rod. I would just keep my metering block swap to an adj. prop valve when I go rear disc?