[Tyson Schmidt]

You'll want to adjust valves while you're at it.

#6 intake spark plug is a special kind of whore. Even worse than on a 964. (Which is pretty easy once you've done a few. Not so with the 993!!!) Either do it with the intake cam cover off, or remove the engine sheet metal from the right side and do it from the bottom. The latter is the more time consuming, but in the long run, the MUCH easier way to do it. Your knuckles, fingers and forearms will thank you for it.

Also, the pollen filters in the front HVAC unit will need replacement. It's a little tricky, but is pretty easy to do once you've done it once. However it's easy to screw up the first time.