One thing to remember about the BBORR is that the rules posted on their site are not all the rules they have.
If they see something they think is going to be an issue they will ask for it to be corrected.
I had a friend that prepaired a Camaro for the race, followed all the rules they have posted, trailered the car down there behind a van that used as much oil as gas, only to be turned away because he didn't have side windows in the car. They were worried that the back glass could be blown out at speed. When he asked about why they did not have that posted they just blew him off.
He ended up getting invites to attend the Nevada version of the race after other organizers found out about it.