Stewart, I see you've started another thread, but much easier to keep the relevant info in one thread rather than disecting it. Particularly for future reference.
It turns out that in the Feb-Apr 1980 issue of Sports Car World there's a brief news piece with 2 photos in 'IDLE TALK' of Montage by Manta.
There's mention of a De Luxe kit for about $6800 (almost all except chassis, engine, wheels and tyres) Or for those that want to drive away about $11750
As I suspected it was a business based out of Taren Point With it being a joint venture between Manta Cars Australasia and United Sports Cars. 10/15 Atkinson Rd, Taren Point, NSW 2229
Quite likely that Racing Car News of around that same period ran something.
I do recall buying some race programmes off a chap named David about 10 years ago and he was involved with one of the Sydney-based fibreglass specialists. But can't remember whether it was this company.
I'm not trying to offend or send you away because TNF needs new blood, however It pains me to say it, that all this facebook group caper and particularly the Bob W Facebook group 'Old Motor Racing Photos - Australia' might be somewhere that gives you a short, sharp burst of info or old players in that Sydney fibreglass industry.
Edited by cooper997, 04 April 2019 - 23:20.