[Insert foot into mouth]
You may be surprised what one of these can do. I dropped one into my old Toyota pick-up and was amazed. I just had to keep it turned way down. Of course, it depends on how much you want to spend and how much you want to chase down rattles in your car.
[Remove foot from mouth]
[Insert foot back into mouth]
It might help if I post the link:
[maybe I should just leave my foot in my mouth!]