odd... I get this thunking noise too, but the only suspension change to the front of my car is springs. I'll check the torque on the mounting bolts and center bolt. Anyone know the stock torque specs?

 

The center bolt is 46 ftlbs. http://iihs.net/fsm/?dir=60&viewfile...20Assembly.pdf

The surrounding 4 bolts are 26 ftlbs. http://iihs.net/fsm/?dir=61&viewfile...20Assembly.pdf

Please let me know if your thunk goes away. I am getting the thunk too and its kind of cold to go outside and retorque everything if its not going to get rid of the noise.

 

took her to a local de/tt and seems the sound went away. perhaps it just needed to settle in,(she handled as if on rails) i have no idea what it was but the sound is gone.