The below picture shows you about how much the fluid is going to drain. And from where.



On the input shaft bushing you need to remove the bolt closer to the firewall, don't bother with the box side bolt as you can mess with that when it's out of the car. Both bolts are usually stubborn and I've cut more than I've successfully unscrewed. Heat, penetrating oil and a few whacks to try to shock it usually work in combination.

You may need to rotate the steering wheel to get a good angle on this bolt.



Disconnect the lines from the power steering pump. Move them around until they are untangled from any other line and loose above the steering box. When I unbolt the box I hold on to the lines, using them to lower the box to the ground.



Get something for the box to land on. It's a heavy 30 lb monster and you don't want it hitting pavement, or you. I've used foam pads to catch pans. Just make sure there's something to protect the box and the ground.