Is the 02 STS designed to cut out @ 4K when rev'd in neutral?

yes sir, however in drive she should let you ride her all the way to 6k. it does it in park too. at least this is the story on my mom's 01 SLS

Thanks. You might also know, what provides the firmest shift to second gear, what lever position?:burn: :burn: :burn:

You'll get the firm shifts with the shifter in either 1 or 2.