I'll add a few things I've noticed.
- The EB models went to non-perforated leather on the seats.
- The rear cladding changed to include a plastic moulding at the bottom of the tailgate.
- Limited models dropped the unique grille in favor of a painted XLT grille.
- Front Side Airbags were not available until '99
- The fender flare style changed to one with a lip on it on 4 doors, not sure about 2 doors.
- Heated seats became available in '99
- The roof rack style changed slightly.
- I believe Limiteds started getting woodgrain center dash bezels in '99, but that may have been a 2000 change.
I looked at trading up to a '99 EB a while back. Can you tell?
Most of this won't matter if you're looking for another sport. They don't seem to have changed as much between those model years.
Oh yeah, and the lumbar support changed from electric to manual. You get a knob on the side of the seat instead of a switch...