Did I read you correct-150K miles? What year is your car. I would suspect that you may well need bushings in the suspension, but shocks come to mind first. I have no idea about the coilovers (never heard of the brand) or how they are installed. If your car is a 5th gen then the endlinks are fairly rugged but the rods can bend under extreme loads.
Then again an end could work its way out of the socket (they are like ball joints actually).