I found a race video on YouTube. It's the "MN Special GT Race" in Crystal Palace on 09-09-1972. If I saw it correctly you can see the Ardua MK 2 on 0:13 behind a Astra RNR1 (guess) and on 0:33 in front of it. On 0:43 it seems to be involved in a little accident with a red car. Is there someone to confirm that this is an Ardua MK2 like ours?
http://www.youtube.com/watch?v=VtkQZ...eature=related