It took me months to track down the rattles of my jeep!
I have two 12" diamond D6's in the back, 1200watt.
I even took out the lift gate handle and cut some
Rubber and glues it behind it and reinserted the handle.
All it takes is time and patience to track down each rattle.
Now there is not a single rattle, and I have tuned just right!
It rattles the car next to me if I wish, and I can make the hair on my arms stand up.
All it takes is persistence and the desire to have the best sound possible!