If you ran almost 104 mph, thats just enough to sqeeze into the 12's. Keep in mind though, when you run slicks you start to break stuff. 8.8 rear can break easy when its hooked hard.
your 13.6 time, you hook the car and get a 1.7 60 ft you gain a half second right there. now your at 13.1 youll probably get more mph with a good launch too. your right there knockin on the door