The best I have seen on a stock motor was a 12.56@109 by my buddy. He had IMRC elims, full exhaust (LT's) CAI, pullies, SCT Xcal, and 4.56's and some serious weight reduction.
I personally ran 12.80's@108 with 4.30's, Steeda UD pullies, BBK LT's, MAC catback, JLT CAI and 12.30's@111 with...