There is a Ford Special Service tool for it, I'm not sure if it will work with the transmission attached to the engine though.
One trick that I commonly use: (but have to be very careful with)
-Disconnect ignition coil lead from dizzy
-Put wrench & socket on crank bolt, with pipe over the end of the wrench, resting against the bottom of the car
-Turn the key to START quickly - don't hold it, to momentarily engage the starter ("whack" the starter"}
--This will loosen the bolt on the crank using the starter. Will not work in reverse to tighten it.
**Use this method at your own risk.**
The Miata guys had a tool that bolted to the accessory pulleys with those 4 10mm bolts - you might need to come up with something that will fit there to keep the engine from rotating. It's tough with the automatic.