Just wanna add that this is not realistically possible.
I read this thinking I was gonna be able to just unbold the manifold , slip out the old gasket and slip in the new one
which is exactly what I did - the problem isnt in the new / old gasket, its that the weight of the exhaust and turbo will pull the manifold down by a few mm when you unbolt it which means once you get youe new gasket in its impossible to thread it up correctly without cross threading as the fella above did. I even tried jacking up the exhaust from below which pushed up the turbo and manifold but it was to no avail.
Unbolting ONLY the exhaust manifold to replace the exhaust manifold gasket is not possible for 99% of people. - it will in most cases become a turbo off job