they are both the same for each side. I would use these for any after market suspension as none seem to have a top mount as large as the OEM one which distributes the load well.
I did try searching for picture's I saw on the net, which showed severe cracks from OEM and after market. Then with more research it is a common problem that can be kept at bay buy using these plates, easy fix just like doing the z3 rears although the fronts go under the tower.
Sorry I missed the digit
