One key advice for everyone is that almost everyone will have difficult time putting turbo outlet hard hose back on the oil return hose. As I have shown above, make sure you put your arm DEEP into where return hose is and you must be able to get a good grab of it. Otherwise it will be nearly impossible to put the hose back on. If you have problem with it, have someone with relatively small hand to do it for you.
If your car is old and you decide to use air tools, be sure not to use too much torque in freeing up uppipe/turbo and downpipe/turbo bolts. Too much force will result studs to come off free. I had this problem on two studs.