I'm always afraid anything north of 120 is going to cause the fenders to fly off. When we were stock, it was a struggle to get to 105. Now supercharged 100 happens almost every trip at some time. I must agree with @rabtech that these things are as aerodynamic as a brick. I have no idea what top speed is with this Alpha Supercharger on here at anything over 100, I'm too busy looking at the road to see the gauges!
I know it was silly but you have to admit it was a fun excursion to exploit.