@ Skfarek: Thank you! I don't think Rindiesel will open a topic here, but I could ask him, but I think he is too busy dating with my sister

haha. Oh, and Rin passed for his EU-racing license this weekend, so now he can officially take part in track racing with his 6N.
@ Borek: No, it's not a substitute, the original ARB is IN the rear beam, the Eibach or Neuspeed ARB is ON the beam, and even connects to the lower mounting point of the rear shockabsorbers! So much stiffer then the original ARB, and both can be used at the same time!