For the record I was clunking also. I pulled the rear sway bar bushings and could see they were worn. I didn't have new ones as I was just trouble shooting. I noticed they are actually mounted on the bar right as it starts a radius which wears them out. After seeing this I cleaned the bar and switched sides so the radius would wear on the opposite side for a while. I lubricated the bar and bolted it back up. No more clunking for over a year and then it started again so now I'll get new ones. If your tired of the clunk but don't have any new ones yet it's pretty simple to just swap sides and get a year to buy new ones!