ITR brake rotors are so cheap, you might do as well just buying new Brembo blanks or whatever the cheapest thing is that you can find...even at Advance Auto or Autozone, believe it or not.

They're basically all the same.

However, remember that shaking under heavy braking doesn't necessarily mean that rotors are warped. It could just be material transfer onto the rotors. Something I like about the latest from Cobalt Friction is that material transfer just doesn't seem to happen, and the rotors last a long time.

I can't explain it...it just works.