I need some help with my power brake system.

From the looks of it I need to replace most of the parts. I would like to upgrade to a modern master cylinder, with front and rear independent circuits.
I have searched Stovebolt and a couple other forums for a bolt in power brake system for Drum/Drum. I am sure someone out there has made this
upgrade, maybe even knows the part numbers used.

Has anyone had any luck sourcing an under cab master cylinder that works with the 6 wheel cylinder, 2 ton trucks?

Thanks in advance