Correct me if I am wrong, but I don't recall any choices in the rubber pads for the compensating spring. Thank you by the way for reminding me of the actual name for that spring. I have forgotten. I know that in the more expensive sedan models that spring was replaced by what we used to call a highly neurotic compensator. Other items like the transmission also could noy be upgraded because of size constraints of the 113 chassis. I will have to look this up in my TDM ( technical data manual) for that year. Also that car came with 185 no profile tires. The 205/70 series may have a different loaded radius which might cause a problem.
Auto Zentral Ltd.