I'm looking to put a duel master cylinder in 1955 Ford Victoria. I know I can put a 1967 Mustang. Are there any others I can use. I have all drum brakes so I need to get drum/drum. Also what other parts would I need.

I used one for a 1970 Torino with drum brakes all around for my 1957 wagon.  Ford did some changing of the mounting flange on the early cars (I know that '56 is different than '57). But I don't think you should encounter any mounting problems.  You'll need to split the front and rear brake lines.  I did this at a fitting on the frame down under the cowl.  I think I had to plug one hole in the fitting.  Then you'll need to make a new brake line to pick up the rear brakes.  It'll make more sense when you are looking at your plumbing.  You might need a T fitting off the master cylinder for your brake light switch.

Jeff Petersen

Thank you this does help. Let you know how I made out.

is the new master have same size pistons,i am thinking of doing away with remot booster(tbird typ and looking for master with smaller bore  for mor presure

As was mentioned, Master Cylinder piston size is a consideration also.
Decreasing MC bore size will decrease your pedal effort and increase your pedal travel. Conversely, a larger bore in your car’s MC will, all other components being consistent, increase your pedal effort and decrease your pedal travel. As with some other brake parts purchase decisions, this comes down to your preference for how the brakes “feel” under your foot when you are driving and stopping.
The system requires a specific amount of brake fluid to be moved from the MC to the wheel cylinders in order to fully actuate them regardless of bore size or stroke length. This volume or displacement of fluid can be thought of the same as a bore and stroke on the engine. If you reduce the bore you must increase the stroke to get the same displacement. As with everything there is a limit. (Unless you are the IRS and they have no limits.) You don't want the stroke so long that the pedal hits the floor before it moves enough fluid. Wheel cylinder bore size can come into play also if it is changed, as it sometimes is, when changing to disc brakes on the front.

Jim
Norfolk, VA

"MABLE"
1956 Thunderbird Green / Brown Interior (ZE-XG)

"MEAN GREEN"
1956 Mainline (FG-BE)