Will this work if I'm swapping in an aftermarket front bumper cover?

Yes. As long as your cover is designed for this generation Mustang, this bracket mounts at the factory points and supports it the same way. Test-fit your cover before final fastening to confirm alignment.

Do I need to remove the bumper from the car to install this?

Not necessarily. You can access the mounting points with the cover off and bracket in place. Some installers prefer full bumper removal for easier work—your call based on your comfort level and available tools.

What if my current bracket is just loose, not broken?

If the mounting points are still solid, you might only need to re-tighten existing fasteners. Only swap the bracket if it's cracked, bent, or the mounting holes are stripped out.