So, earlier i was driving and i needed to brake fairly hard, just enough for my tires to not lock(i dont have abs). Anyways when i did so, a driver next to me told me that my front brakes were sparking pretty badly. i pulled over to check them out and everything looked okay, but every 10 second or so i would hear a clicking sound come out of the front right and back left brakes. I should also mention that i have a wilwood big brake kit on the fronts.....did i just heat up my brakes to much? why would it spark like that? Any ideas?

Thanks in advance,
Bashar