I've got a Series II NA motor, though mated to the older 4T60E (darn those transition years...) and I actually have very little perceivable slop in the throttle. There'* some side-to-side movement of the pedal itself (seems to be normal across all Bonnie), but as far as pressing the pedal even a degree, the big girl will respond in kind. As of now, about 143,000 miles on her.
My father also has a '93 (Series I NA), and from what I can remember of driving it, little or no noticeable slop in the cable either, at least none that would be outwardly irritating. 170,000 miles on his, engine has never been touched anywhere near the throttle assembly in its life that we've owned it (since 10k miles). I'm at school now (100 miles from home) so I can't just jump out to the driveway to try it out again. Sorry fellas.