Musta tol!
Pre, I have a 2002 954 with stock suspension
Preload depends of course on your weight, I'm 5'8" and 200lbs fully geared. I like to have between 30 - 35mm up front and 25 - 30mm rear of preload. (factoring in my 5mm of stiction)
Front preload: 9 turns out
Front rebound damping: 2.5 turns out
Front comp. damping: 2 turns out
Rear preload: position 3 from top
Rear rebound damping: 2 turns out
Rear comp. damping: 2 turns out
I've run these settings on 3 different tracks and it's served me well, only changing half a turn here and there depending on the track surface or tires I'm running.
Take this with a grain of salt if you are only on public streets, since track conditions are smoother, and you'll probably tune for more comfort.
Don't forget top off the gas any luggage etc. or whatever extra weight you want to keep consistent when making your tweaks. This is a great setup for your ride to marilaque