to answer your question, I dont believe that anyone has taken a challenger out and proven what it can or cannot do. the only real basis right now would be the performance numbers of the other SRT8 cars, considering the fact that the challenger is slightly lighter and has slightly less wheelbase. i would expect a stock challenger to be able to sniff 12s with some work, stock...with the auto trans. there are people who have put srt8 sedans into the high 12s stock...with the manual trans and option gears, there is NO reason that a 6.1L challenger shouldnt run in the 12s. i would expect stock times to be slightly better than the stock LS2 GTO times, with the transmissions matching. drag radials alone will make a big difference...