My thinking is that what we have followed here in Aus,NZ and the US etc , since the late 80's is pretty straight forward. If you are in the sport/pastime, you know,mostly, what is OK or not. To me, it gets back to the spirit of the period we are trying to preserve and hopefully perpetuate now and into the future.Within certain limits we /most of us know what that is and means. These bikes shown,are ,as Wombat writes,well done examples,BUT NOT, in the spirit of the era. We need to draw something from this to -"stop the rot", before it all gets too complicated.