Thanks Barry, yes they are different part numbers. I knew that , but my thinking the differences were the length of the turn signal stalks and the brackets for the fairing, Those stalks and fairing mounts made no difference to me as I was cutting off the stalks and taking off the fairing mounts. Low and behold there is a subtle difference with the spacing of the ignition switch, less than a 1/2 inch and not detectable if you aren't looking for it. Alas that subtle 1/2 inch has thrown a spanner into my soup.
I\am now looking for a standard R65 front headlight plate!!!
Thanks again for your reply Barry