even if it's above 3k rpm it doesn't do it it's when i hit the certain speed that it does. i can't really tell, it's like a somewhat high pitch buzz\squeel\rattle but very fast rattle

yeah that's where i ordered it from...mine's the 4 door sedan S "trim" lol

the sirius came pre-installed from factory and it's on the very top\front\closest to rear windshield of my trunk lid in the middle