Get some drag radials, or slicks, and see what your car does then. I'm still trying to figure out why only 109mph myself. Was that a full pull, or did you let off, or braking early toward the end? Putting down those numbers to the wheels should easily net you 114+mph traps. Even with a horrible 60ft time.
I, too, ran 109mph trap and my butt dyno tells me I was at about 315rwhp. I never dynoed my car.