Technical 1940 Plymouth brakes

I want to keep my original brake pedal in my 1940 Plymouth. Does anybody know where I can get a master cylinder for that car. It uses a unique mount cast into the bottom of the cylinder and does now mount from the flange like most.
DJ

 

Try here....http://www.applehydraulics.com/

or here....http://www.whitepost.com/

 

The master cylinder on my Plymouth is under the floor but the pedal is not standard.
On my 41 Chrysler the master cylinder was under the floor and the original pedal had been made to fit.I think it was a Ford truck master cylinder.