Been making these steering box flanges for Model A and 32-34 Ford cars. You have to cut the old flange off your F1 or F100 steering box, grind it down to fit the new flange, then weld it up. Watch the video below as a how to if you need to see how to do it! $85 Shipped, Includes: 1) Hole saw drill guide .120 Mild Steel 1) Outer support ring .125 Mild Steel 1) New Flange .375 Mild Steel