Following up. Checked the middle shock shaft bolt on the top of the hat and went ahead and checked the other 3 bolts around the hat. All bolts were tight, and clunk is still there. Just had shocks rebuilt by TSW about 5k miles ago. Any chance its the shocks and i should make the expensive upgrade to 3.0s? Next to be replaced are my upper control arms? If that does not fix it, then 3.0s may be an option. Or at least an excuse to upgrade