Topic: Adding Disc Brakes

[ChrisV289]

So I want to add the factory disc brake setup to one of my cars. I assume the two raised areas are where I would drill the holes for the proportioning valve? Also what size hole are they supposed to be?

[jwc66k]

Look at the Chassis Assembly Manual. The mounting hardware part number is called out. Then look at the Mustang Hardware Spreadsheet 64-66 by part number. An appropriate size clearance drill can then be determined.
Jim

[J_Speegle]

From a couple of 66 examples

They are at an angle from one another

Bottom left taken from the wheel well side - Top right from the engine compartment size

Don't have the size of each hole's measurement handy

[Bossbill]

I have factory DB on my 65 and both holes are the same size and just a bit over the thread size of the bolt (0.310).