Just had to post. Very proud of getting rid of a clunk from the rear of my 2002 TJ. I replaced the shocks and tightened everything I could. Still had the noise. I then started lifting on the plate underneath the gas tank. It was loose. It wasn't until then that I noticed that all six bolts were dangling loose from the back bumper. It was bent down, but I used my scissor jack, pushed it up enough to tighten all six with left over washers and nuts. Now, no clunk! Pretty simple for most of you experienced guys, but I was pretty proud.