Ok, so I have this rattling noise.. at certain RPM. at 1400-1500 and between 2800-3100 rpm.

thats the are i cruise at (2800 rpm) and the rattling noise is BAD.
one mechanic said its most likely that thing under the shield. with bunch of layers etc.

heres the vid. (the car is rev'ed to 2800) you can hear the rattling.
http://www.youtube.com/watch?v=E8krFh2TNqM&fmt=18