My rear pantah head is fitted to my harris tt2 ...
There are a couple running in the classic racing mc.
Try posting on the
www.crmc.co.uk message board.
I have a contact number for one guy if I can only remember where it is !
Paul Klatiewitz in yorkshire could also be helpful, and I'll dig out his contact details, but I think he does have a small website.
John Wittman is not normally very helpful.
John Fallon at mdina italia may help
www.mdinaitalia.co.uk