Does that mean you can't get a SR20DE engineered over there?
It's a shame all states can't just be the same.
If a car is engineered and registered in one state, I feel it should be recognised in another state.
The engineer that signed off on it still did his / her degree that is recognised Australia wide.
If they would recognise the rego / engineers for the DE engine. You could put the origional DE stuff back on for the transfer, then put the turbo back on later - (not that I would encorage anything shifty)

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