Narrow it down.
Remove your supercharger belt and start the car and see if the sound is still there.
Yes, then its something else motor wise.
NO, and then you have it narrowed down to the supercharger, or its pulleys for the belt.
The clunking could also be a worn out balancer on your crank as well to even a bad idler or tensioner pulley on the accessory belt or even on the supercharger belt.
Your rotors you removed, how they have the shinny spots on the blades, thats the rotors making contact with each other. I have seen them worn down to the metal below before from them knocking around in there. Your case needle bearings, deep inside the case could be worn out, or you switched your bad set of rotors with another bad set. Happens.
But before we start jumping further to replacing expensive parts, check the above carefully, and go from there. Its not hard to pinpoint the sound. Better than finding a small fluid leak, or tracking down an electrical short. Trust me.
~F~
