+1 for replacing it without engine drop.
It's tight under there, so it helps to have slender hands and long fingers. Wives/girlfriends with mechanical aptitude would be a definite plus for sure.
I think I spent the most time and experienced the most bloodletting simply trying to reach around to unsnap the rear fasteners of the air filter box, and a close second was wrenching out the two bolts mounting the cruise control servo. You'll see them in the lower right of the first photo. Obviously the blower and ducting needed to come out first, as well as swinging the sensor connector bracket out of the way in order to accomodate a human hand holding a wrench. After that, it went rapidly... about a half hour.