Ouch. Honestly that's baffling. One extra cylinder and then parts prices skyrocket through the roof. It's the same body, but I'm guessing with the extra HP it needs something designed slightly different. I bought my shock kit (with bushings and mount) for probably $100 each side. You might be able to ask a local euro parts place if they can find it for you as the web seems to only have a few places. In the time being, it may help to swap the passenger side onto the driver's side, since the driver's side gets the blunt of the force.