I thought it might help to list the tools needed for the job.
1 T15 L-key (at least 5 inches long) for the screw next to the headlight switch
1 T15 L-key (standard length) or insert for multi-tip screwdriver for the door side screws holding the vent panel on
1 medium Phillips screwdriver (long helps) for the screw inside the vent
1 small flathead screwdriver no more than 6 inches long, shorter may help (the cheap precision kit screwdrivers fit nicely, but tough to get enough torque to crack the loctite)
work light (cordless LED is nice)
Toughest part of the install was the whole idea of getting under the dash. I'm 5"11 220lbs, there's no way I can fit in there. Fortunately, my wife (although almost my height) is about 1/2 my size and she managed to fit in there and work from underneath while I did things from on top.
Thanks to mptoledo and his additional tip about the headlight switch, burgboxster for the part info and the link to Pedro's Garage, and Pedro for the great instructions!!! You guys rock!