WTB: Rear Axle Housing Ball Joint or HICAS Tie rod ball Joint

I am looking for this item…


For the HICAS rear steering its the ball joint that attached to the spindle to control the toe and steering. I need new ball joints and have only been able to source them at the dealership…but they are $77 each there…No luck at Napa or Parts source or Automotive warehouse…any other suggestions or links?

http://i44.photobucket.com/albums/f9/tbradley_2/1992%20Nissan%20240sx/balljointpartnumber.jpg

Part # 55154