Is it on a rsturbo manifold?

If so I'd personally whip the manifold off as its much easier with it off, manifold off is a ten minute job

Take the oil feed pipe off the top of the turbo, oil drain back off the bottom, boost pipes and exhaust down pipe off

Then the 8nuts that hold the manifold on and you will be able to lift the lot off the engine and out the front.

When you get the turbo and manifold off then you can undo the four nuts holding the turbo on the manifold

Dead easy fella