Since Stock filled up so quick this year, I’m expecting the amount one has to run under the index will be back to what it was prior to the pandemic.
The cut off point for qualifying in Stock the last two years at the US Nationals has been well below(slower) what was typical in the past..........when many cars running .8xx under the index didn’t get in.

In 2019 you had to go .867 under or quicker to get in........ which was more typical for that event.

The last couple of years it’s been in the .400 under range.