Unbolt the motor mount's, then lift or jack it up as high as it will go and support it with lumber under the motor mount's. The oil pump stick's down into the pan about 9 inches. Naturally you have to disconnect the exhaust. If you have a turbo on it then that's another story.
Drain the oil and take the filter off, otherwise it get's a little sloppy.
When you replace it, seal it with RTV Copper, don't try to use a gasket, most time's they will leak if you do. put a small bead of RTV on and let set up over nite, then put a fresh smear on it and let it setup until a skin forms just before re-installing. Apply a little RTV by the front and rear main seals where the pan meets them.