Well, my buddy and I finished the install today. It went quite well. We ran into a few issues, but nothing that I was not aware of before hand after reading the threads on this forum extensively. It took us about 10-12 hours. And was quite exciting turning her over for the first time.
As far as testing goes. Before the install, I took my 01Gt to a stretch of road near my house where they are building new homes. It is long, and is a dead end, and since nobody lives there yet, completely deserted. I pulled out the trusty old G-Tech Pro, and made about 5 runs using the HP feature. For those of you that are unfamiliar with how it works. You input the test weight of the vehicle, and once set up, you accelerate as hard as you can. It measures G-forces and time, and from some simple math equations, figures out HP. The numbers is always lower then RWHP, because added to the drag of the drive train itself, there is also wind resistance. It is a very useful tool, especially for those who do not have access to a dyno.
My first 5 runs all fell between 210-215HP. If you divide that number by .80 you get 263-268HP at the crank for a baseline. After the install, and a few test drives to make sure nothing was going to blow up, and a few rides to friends houses to gloat, I went back to the same stretch of road to test the new setup. I did not shift at 6000rpm as I did in the first test because I am still getting used to driving the new setup. And since the car and the blower only had about 50 miles on it, I still wanted to take it easy. Shifting at between 5000-5500rpm, my numbers were between 300-305HP. I have no doubt that I could easily have added at least 5-10HP running to 6000rpm. But even taking the lower numbers, and dividing by .80 you get 375-381HP at the crank. That is a solid gain of over 110HP at the crank.