On many instructions it is adviced to take two WP bolts off from inside the cabin. I did this on my first WP change - a real pain in the ...
Second time a round I unbolted and rebolted all WP bolts from undernath the car and it was waaaay easier.
My car is 2001 Boxer Base with manual transmission (probably does not make a difference between 986's).
Also not very messy since I was able to use a lift in my friends shop and was able to stand under the car