Last year I posted a post that said "I believe" after I finally installed a pair of SFCs on my 1990 Camaro.. Immediately I could hear my radio without having to blast it over the other noises generated by the poor chassis design of GM. The car felt new again. Since then I have only driven my car about 3000 miles and guess what...... They are backkkkkkkkkkk... The squeaks and rattles are back in full force... As you can see GM did a wonderful job messing up an otherwise great car.. ANYWAY I did manage to get rid of some of those rattles and squeaks by using up a half of can of silicone lubricant and sprayed it in every cranny in and out of the car.. Now I can hear the radio again.. Bottom line SFCs helped but they are not perfect.. I can never Thank the designer enough for the chassis he gave us...