I am considering the purchase of a used, low mileage Carrera, (thinking
maybe an '02 Cab) and would very much appreciate advice from the
knowledgeable people on this list.  Is there a model year in particular I
should avoid, any known issues I should be wary of?

In doing research I am finding what appears to be lots of folks driving
996¹s who have had problems with RMS leaks, which if not attended so quickly
result in a need to replace clutch and flywheel.  Also, an inordinate amount
of full engine replacements, with dealers actually keeping replacement
engines in stock!  This is causing me some serious second guessing.  I fully
expect to delegate maintenance to professionals on this car, but I don¹t
expect these kinds of problems on such an expensive car with a reputation
for excellent engineering.  Anyone on this list with experience with either
problem, or know someone who has?  I am trying to determine if this is as
widespread as it sounds.