Atco didn't have a negative DA when I ran, not even close. They started running around 10 and I made my first pass at 10:30. Also, it ran an 11.6x in ~400' DA.
Expect to see ~11.3-.4 A6 cars. I also think that the M7 cars are going to trap higher due to less driveline loss and lower weight, but won't be quite as efficient getting down the track. I've drag raced lots of manual transmission cars, including 11.3 in my bone stock '13 GT500, 10.0 in my '03 Cobra, 9.8 in my '98 Viper, etc. and would love to have a day with one. Based on how these cars hook, I'm pretty sure they're going to go mid-11's too.
S.