Help identify disk/drum master cylinder

[Casey66]

I've been re-plumbing the brakes on my '66 shortbed step and am now needing to replace the master cylinder, it's been leaking. Problem is, one of the POs upgraded to a dual master cylinder/brake booster setup and I don't know what it's off of. I'm running disks in the front and drums in the back. The only thing I can read on it are a tag saying "0094" and another saying, i think, "223223LA" or "2232231A". Several searched turn up nothing for any of that.

If anyone can id the brake booster also, that'd be helpful too.

Any help is appreciated.