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Noises are very tough over the net, but I can give you my thoughts. The rear bushing on the lower control arm, I have see make noise. I would also inspect the Power steering rack bushings also.
The noise you are hearing, is it over bumps, all the time? Can you duplicate the noise? If so, what do you do to duplicate it? If you turn the steering wheel side to side kinda quick, do you hear it?
Try to give me the best description you can, on how you hear the noise. The big thing is, can you make it do it. If so then tell me how. Noises are easier to figure out, if you can find the pattern on how to duplicate the noise. Once you figured out how to produce it, it makes it easier to find it.
Please let me know, and I will do my best to help you. Thanks Jay!