The first gen 986 (2.5l) has a rev limiter at 6500. I believe both the 2.7 and 3.2 red line at 7000, but don’t quote me on that.
For the record, first gen cars are rock solid, though not speed demons. Very fun and agile, like a go-kart on steroids. The ‘99 is the best of the first gen (earlier cars had d-chunk cylinder issues). It has a double row IMSB (intermediate shaft bearing), whereas the later models have a single row bearing that is more susceptible to failure, it does not have the terrible soft touch interior that later models have (that peels and looks awful), and has the reinforced (stiffer) unibody for less flex and accommodating larger wheels.
Yep, ‘99 all the way
(I may be biased)