[Graham]

This resembles the list of the International Proxy Series.  If we go this route, will Ferrari P3, Lola T70 and Ferrari GT40 be eligible to compete against the 250 GTO or Porsche 550?   Just a thought.

Well spotted, until we get a decision of which OPTION type proxy we are dealing with, it is all a little speculative. But if a look at the Events set out in the Road Race programme, I would say unlikely because the dates would enable me to separate them.

I have not checked, but the Porsche would be in the Millie Miglia, the Ferrari 250 GTO probably in the  Tour De France, the others on the Targo Florio