I thought I should add that I do not have any brake shields front, or rear. Apparently they are often left off by FFR builders without any ill effect.
Is it possible something could become lodged in a caliper, and not vary in sound regardless of speed, or if brakes are applied? Anyone experience that before?
I keep thinking the sound is so similar to something like that, as it has happened to me on other vehicles. Usually simply reversing the vehicle has been the cure for that issue, as the object drops out.