Bilstein shocks on 512TR and later Ferrari. Springs probably made by H&R or Eibach under license to Ferrari.
i purchased a set of koni shocks. yellow color for firmer ride and better handling for my 512m . the shocks do not fit.. The springs are to small in size.. i did not want to get rid of the original springs. but now may have too.. i will call ferrari of north america tomorrow... i just hate bilstein with passion. i just do not understand why bilstein has not filed for bankruptcy. john