That was from an Australian called Sheldon. He sold them through AULRO.
It is a landrover specific conversion as Australia got a lot of landrovers (military and civilian) in the 1980's and 90's using the 4BD1 (non turbo) with landrovers LT95 4 speed gearbox and integrated 2 speed transfer.
That kit has an adapter ring to fit the landrover specific engine bellhousing and a welded adapter on the tail to fit a landrover LT230 4wd transfer box.
He had a lot of issues with the fabricated tail housing breaking and the adapter shafts inside breaking. Likely from material choice, heat-treatment and design details. I used a different design and steel in my adapter shaft and mine hasn't broken.