Intriguing eh flyerme? I wish I could help but I only have Tony Hayes 2 seater identification guide. It's certainly frustrating that since Tony's passing there has been virtually nothing from TOSG, possibly because this is not Bob Llewellyn's first priority (and I make no judgement about that). Just a pity that all Tony's information - his legacy, is still there but unobtainable it seems. I paid my annual subscription to TOSG after Tony died, and after speaking with Bob, in the hope that TOSG would continue, but nothing, not even a newsletter.
Back in the early days TOSG was started by Tony and a fella called Steve Vette. Now I know Steve personally and will be seeing him this weekend. I'll ask him if he can help with some information for you.
Cheers,
Pud
PS. You might try sending a PM ('Start a conversation') to Steve; he is a member here as AVU.
PPS. You probably have looked here already - but just in case you haven't, try this http://www.auf.asn.au/magazine/thruster_history.html#overview