The reason you won't find much info on this is because it's not actually a model, it's just an
Adams 40 design built by the Trewartha Brothers of Warrnambool, they built many different
boats from many different designers. Probably someone bought the plans for the Adams 40 and contracted the Trewartha's to build it for them, you could buy the plans for the 40 in many different configurations and construction materials....
The Trewartha
family is still in Warrnambool, and still involved in
boating, although i think they may have got out of the building side....