While we're upgrading the brakes, let's also replace the factory front drum brakes with Master Power's front-disc brake package (PN DB1521B for a '70). It's complete and an ideal choice for a regularly driven vintage Mustang. The main bits include the four-piston calipers, rotors, caliper mounting brackets, brake lines, and wheel bearings. All the related installation hardware is also included. The kits for all '65-'73 Mustangs are similar to this '70 kit with slight variations depending on the year of your car.