That being said, all that you say you've done is going to shift the power band up higher. I noticed similar changes by taking weight off the rotating assembly & adding the s-1 cams from JWT. You've taken it a step further with lighter pistons & rods. This is what works for high reving na race cars on fast courses that stay in the "stratosphere" rpm's. It'll be fast mid and top end with current gearing. The 4.10 leader gears DanZ mentions are available but stock is 4.08 so I don't think you'll see much difference. BTW did you do anything to the crank, or balanced the motor?
PS- I'm interested in seeing a dyno posted, I can't imagine you haven't done that yet.