Probably too far down and too small to weld a nut on
You might be time and money ahead just buying a new manifold they aren't that much. You will need a turbo pedistal gasket manifold gasket. Up pipe gasket
Everything else should be re useable. I'll make some recommendations on taking that out. Remove the right under fender remove the entire down pipe assembly to help with the up pipe v bands. Be sure to drain the coolant before removing the turbo. The rest is pretty easy. It may seam like extra work taking the down pipe out but you will see why when it goes back together