I ran 9.40s at the 1/8th with cat-back, full exhaust and street tires. 3.73s I ran 9.0 as my best my first outing, and my next I clicked an 8.9 off. The 8.9 was a hella good launch on streets and driving it like I stole it.
Write down whats on the tag then I can tell you. You'll be a 9 flat car consistantly with some good driving with a decent track. Maybe some 8.9s. With gears though you relearn to launch the car. I dropped rpm and got the clutch out quicker so the throttle could be to the floor. The gears will make up for the lost rpm.