Pretty good instructions can be found here:
Updating the brake master cylinders
Note how the assembly is put together.
And here is a pic of my pedal assembly. I had the pedals spread out a bit for my 12EEE feet. So, when you pull your assembly apart, if the angles of the clutch and brake bars that go down through the floor don't look the same as mine, then you 'll need to check with Bob P. and get a new set that are spread a bit more.