Bill Spence had three of these in his hangar at Camden around '92. they were unflown and incomplete.
It was rumoured someone on the Australian East Coast had a number of incomplete Trislanders, rumours range from six to nine aircraft. They were apparently acquired when Britten Norman went bust and the Company was sold to Pilatus, but I can't tell you what year.
Rumour also suggested the intent was to install two Canadian aluminium block V8s, but it never happened. No idea where they ended up.