I ran some 11.40's back in 07 on the stock F1's with nothing more than a 2.6 pulley, JLT, and Lund tune.
1.7's. Here is a vid from long ago: YouTube - Black/Red Stripe Package GT500: 11.47@122 on Stock Tires!
I'd like to hear how the 2011's are running, cant find much on them yet.
What the best times you gotten with real street tires no drag radials?