DON'T remove the manifold, two of the nuts are a bloody nightmare, and they don't need to be undone.
The job really is a piece of piss with just removing the manifold by undoing the four nuts, that hold it onto the trousers or the trousers themselves.
If I was doing it I wouldn't even remove the turbo, it doesn't need removing to do this job, it's awkward but do able with a open ended spanner.
tabetha