TireSmoke.org

https://autocrossweek.com/

Short version is this is like drag week only with autocross, and it will be at Dragway 42 on 7/14/22. It's too late to for me to register for this but might be worth scoping out for next year.

I'd really like something like this only with road course time trials as the scoring tool.

They have live timing for this event. There is an app I saw some guys using it. For the internet browser here are the results: http://live.axti.me/results/XRcfwTF4D

There were 48 cars that ran the circuit today.
The environment was very casual - lots of time to get in runs - looks like 10 was the most. The course was so long they would have up to 3 cars going at a time.

Pretty sure the Saturn and Paul's Firebird would be in "naturally aspirated" class.