So I installed the rear blocks w/o the washer and it was very clunky & noisy while driving.

Tonight I finally finished taking out the rear seats and installed the needed washer. Clunking while driving is totally gone, but I did hear a clunk when going over a speed bump in my parking garage. Do you guys with SS kits still hear that clunk occasionally? Not sure if I maybe didn't do something right.

 

My kit was installed with the washers from the start and I haven't heard any clunking from the rear.