I don't know about on stock tires, but I know some people have gotten '05's in the 12's. I have 12 second trap speed, but I just can't drive haha. I'm trapping as fast as a friend of mine that went 12.7 in a Mustang GT, but he was on some good DR's and again, he can drive. I'm hoping I can manage at least a 13.2 next weekend. But that by far isn't anywhere CLOSE to the fastest.
Some chick on Dragtimes.com went 12.8 (IIRC) stock on DR's.
EDIT: I have a 6 speed, and the girl on dragtimes had a 6 speed as well.