I am the original owner of a '99 C2, black on black, approaching 60k miles. My Indy recomended oil change and filter, fuel filter, air filter, belt replacement, and it needed a battery. During plug removal, he discovered four or the six coils were cracked! One was pretty bad.; I'm surprised it ran that well. He could only get four Beru's on such short notice. Total damage with labor was less than $1,100, which I consider quite fair.
Glad I brought it in, and I'll replace the other two when I get down to FL ( I hadn't been driving it much while it was stored in VA).
A few minor leaks from the RMS and on the right side where some sort of sensor enters the engine, but nothing major.
I haven't yet done RMS, AOS or IMS, and while I was there his Mercedes Indy friend called and we're discussing the Carrera. His words - get rid of it!
Well, I am aware of these issues, maybe they are less so for the early 996s. But I will replace them along with the water pump and clutch at 75 k miles if I don't decide to upgrade to another 'play' car.
My Porsche ownership has been wonderful, and I hope all you owners feel the same. Pure enjoyment, a blast on the twisty roads of the BlueRidge Mtns. If only I could get more than 8 k on a set of rear tires!!