Recommendations on 1970 power disc brake replacement M/C

Anybody have any luck on a particular brand of replacement master cylinder? They all seem to be made in China now.

Also wondering if anyone can clarify the discrepancy in the Pumping Points articlehttp://therammaninc.com/files/categ...uide_to_Mopar_Master_Cylinders_1967-19746.pdf) it states a 70’ E Body except 426 Hemi master cylinder (2944453) has a 1” bore, but the factory manual says it’s 1 1/8” bore.