maybe 11 years ago I went to a vette club autocross on a old airstrip near here, and noted that the classes were basically arranged that my particular car ran with cars that were really well set up for that, and trailered in as certainly I can't imagine they DROVE those things with about a BCH or less clearance on any roads...
I tried it, once as a guest run, not competition...typically went too fast and so turned in times slower than average...oh well.....
that was before the rack install, and so much other work I can't even recall ....