The project has been revived 😊 There is lots of good advice above but the used engine market in Oz is a lot different to that in the US, basically more expensive with limited availability. So I decided on a Toyota 2.7 2TR-FE with matching 5 speed Toyota auto, both low mileage which is important. There is an aftermarket controller available for the auto which was a crucial factor. Motor will be stripped for forged pistons and con rods, not sure about which turbo at present, ECU will be a Haltech Elite 1500 which will run the VVT. Might start a build thread some time.