Drew, I just did this yesterday.
Don't bother with the allen bolt. Follow the bolt from the starter thru your
tranny to your motor -- it's about 6 inches long and is held on with a regular
metric nut. You can get to the engine side of the bolt easily with a regular
old socket wrench -- tho you'll probably have to take off your AFM and
throttle body (easy). I didn't even have to hold the allen bolt wth a wrench to get
the nut off. I was surprised when I did this job that the big maintenance book
suggested undoing the cv. I found this unecessary.
Chris Dixon