I developed a clunk after installing Bilstein 5100s with 881/906 springs. The clunking would happen when driving over a series of bumps in the road. There would be no clunks when driving over smooth dips or slowly I jacked up the front end and discovered the driver side tire has 1/2" of left/right play. I've tracked it down to the driver side inner tie-rod. Planning to replace the ITRE this weekend.