Oh, I thought you were talking about the Eifelrennen. Everything we saw at the meet was indeed 100% streetlegal, although the Isdera was a borderline case imho.
I was thinking of flying from OMG to WTF and then hiring a car and driving from FFS to IDK but then I realised tl:dr and then I was like "Meh".
I'm hopeful I can make it, so I'll be coming down from north(ish) England if anyone wants to car share.
I'm due to arrive in England August 4th so hopefully I'll be settled in enough to make it to the meet this year.
I might take you up on that offer if I can't secure an automobile by the time the meet starts.