Step 1: Jack up the car and set your jackstands in place. Remove the passenger side front wheel.
Step 2: Loosen the bolts holding the alternator in place. This will allow the serpentine belt to loosen easily. While you're in there, admire the "Mikochu Über Ground Wire System." If you don't have one, make it your next project.
There are bolts securing the adjustment arm and a bolt beneath that's fairly difficult to reach.
Step 3: Remove the plastic bay cover on the passenger side. It is secured by two bolts under the lip in the wheel well and two screws beneath the front lip. The Step 4 pic shows the location of the bolt holes in the wheel well.
This will expose the crank pulley.
Step 4: Set a large screwdriver or a brake tool between the spokes of the stock pulley and set a large wrench or ratchet on the 19mm bolt securing the pulley to the crank.
Wrench hard and remove the bolt. The stock pulley can be easily removed at this point.
Step 5: Install the new pulley. Mine is a Perrin unit. The pulley has a hole for the key on the crank.
Tip: I removed the belt from the power steering pulley and installed the Perrin pulley, keeping the main serpentine belt pulled away from the crank. Re-install the crank bolt and finger tighten.
Step 6: Reinstall the power steering belt.
Tip: With one hand, set the belt on the PS pulley. With the other, tighten the bolt on your new crank pulley. Gradually turn each pulley until the PS belt is properly located in its groove. No screwdriver needed!
Step 7: Reinstall the serpentine belt. Use the same technique as described in Step 6 above.
Step 8: Retighten the crank pulley bolt and the alternator adjustment bolts.