You should post this in the
924/944/968 Forum to get a better response, but, like with most Porsches, as long as it's been kept in good shape it should be fine. The big thing with the Porsche water-cooled 4 cylinders is to be sure the timing belt is within it's service interval of 4 years or 40,000 km, or waterver it is (my motto is change it early, change it often
).
Otherwise, from what I know, they are quite reliable, fast and comfortable.