The Bouganville Westwind was early 1980's
The Australian agent was 'Jet Corporation' which morphed out of Schutt Aviation. Massive tax deductions were on offer by the government to stimulate business. Bottom of the harbour tax minimising schems were prolific at the time.
York received a huge 'brown envelope' for putting the deal together.
Good engineer; I remember Hevilift's first B-200 arrived one afternoon on delivery from USA. Col. John Scott, Scott Aircraft Sales was on board. Scotty put the deal together and came on the the delivery flight. Next day I went to Yorks hangar and told him the rego was going to be P2-VIC, for (the now late Vic Bott's) Placerdomes GM in PNG. Took one day for the PNG CofA and the next day I flew to Aiyura for the guy's there to Weight the aircraft. Then onto Hagen.
PNG CofA
Yorkie's hangar