CV joints are the last thing to suspect unless you hear clicking noises when turning while moving. The most likely cause of clunks while standing still and turning the steering system is binding upper strut mounts. Reach over the top of a tire and feel the top of the coil spring. Have a helper slowly turn the steering wheel back and forth. The spring should rotate smoothly with the wheel. If you feel it wind up, then pop free after enough tension builds up, replace the upper mounts and have the car aligned.