Replacing single reservoir M/C with dual reservoir on four wheel drum system

Frank Mopar said
[URL]https://therammaninc.com/files...uide_to_Mopar_Master_Cylinders_1967-19746.pdf[/URL]

This is a great article - thank you. It clearly shows the difference between drum and disc/drum MCs. But,

The purpose of this article is to help identify correct original equipment master cylinders from the '67-'74 Mopar muscle car era.

I'm not looking to identify original equipment - I'm looking to replace OE with something else. And, my Valiant is a '63 - none of the parts identified in Table 1 for 4 wheel drum vehicles is for any vehicle before '67.

So I'll ask again, this time informed by @Frank Mopar's advice - can anyone provide a P/N for a 4-wheel drum dual MC that will bolt up in replacement of a single MC in a non-power brake '63 Valiant, and requiring no changes to the push rod?