...I once had a 'Clunk'. Turned out to be the Coolant pipes hitting against the FRONT Anti-Swat Bar, everytime I drove in and out of the Driveway, and other ways. The fix is a short length of rubber hose, Split, and bundle-tied around the sway bar, at That Contact Point.
Also, on My Cat, the Right half-shaft 'can' lightly rub against the exhaust pipe...but only on a Very Hard Bounce, on the Freeway.
MJ