That was a year ago, hell just less than 4 months ago, they got into this "TRIP" that T-top cars=convertibles. And they've been tightening the belt ever since.
If you have a roll bar, they probably wont mind at all, tho rule books are rule books.
A month ago they kicked my buddy with an LS1 out, he ran like 10.2 no bar or cage. Richie HI PSI was kicked out on a saturday test n tune a month ago as well, he ran 11.xx( I wont say
), my suggestion is if your car doesnt have a bar or cage, bring the rest of your safety equipment like a jacket, long pants, shoes, etc.. and their not too bad, if they see you trying.
Attention.. if your car will dip under 12.0's, bring a jacket and definetely a helmet, long pants, shoes, etc..
If you come in shorts and sandals, rip an 11.5.. ya gets the boots. Hope this helps just from racing so much at this particular track.
Just think, 5 years ago they would about let anything on the track. You could race and hold a beer at the same time. those days are long gone.