Chances are, you will never see these in person. They are no longer manufactured and havent been for years, they were ultra expensive new. These are the revised version as came standard on the 560SEL full hydro vehicles. The only difference to the 6.9 version is that it has the ball joint pressed into the arm where as the original early version had the ball joint screwed on and part of the linkage. The parts manual says this version is to be "adapted at time of installation" I take that as meaning you drill out the pressed in ball for it to fit the 6.9. No big deal.
