Well I had a Moser 9" put in my car and a new clutch. He also put a adjustable spohn torque arm! Everytime i get in it alittle and let out it makes a big pop sound and you can fill in in your seat. It is worse in reverse. It is a body mount tq arm, I bought it used and i was wondering it anybody has ran into this problem. I don't know if I need to replace the bushing's or what. PLEASE HELP ME!!!! Thanks Jimmy