[rich b]

Well if you are going to use a 1" dual master on the stock pedal assembly operating Lockheed brakes, you better see how it does with a simulated failures of either the front or rear brakes; then consider how it would do if the brakes were worn some and not recently adjusted.

Mart's 1-1/16" E250 master cylinder is a good alternative; but is physically larger and will require a bulge in the floorboard cover. In my case I made a wood die and pressed a cover in my press.