For the most part, it can be done with only a standard ratchet/socket set. It helps to have a hydraulic bottle jack, and a block of wood, to slightly raise the engine and release some of the pressure from the mounts.
To do it really right and lessen some of the guessing, it's good to have an alignment tool. This is a rigid steel device that Ford uses to make sure that the engine is properly aligned relative to the subframe. The alignment tool is essentially a rigid steel thingamajig which is installed in place of the front roll resistor. Since the alignment tool is rigid, it holds the engine in proper alignment while the remaining 3 mounts are installed. Then, when the 3 other mounts are in place, the alignment tool is removed and the front roll resistor is installed.
With a little luck, you can get the alignment correct without the tool, but it does remove some of the need for 'luck'.
