Sorry I'm just getting up to speed on this thread, but "yes" someone has, here in Oz and a V12 too. Don't ask for details as I can say no more.
John - Have you obtained a quotation for your engineering approval, if not it might be wise to do so. One gingerbeer quoted me $6k just for the brake testing, needless to say he is not the one I signed up with. Also, once you sign up they give you a number and you only have to meet the standards at the time the number was allocated.