I don't see how you can go through the lites at 7000rpm with 4.56 gear and 32" tire????
My duster has 4.56 gear, 28.5" tire and it goes through at 7100rpm!

Glenn, I know you opened up the exhaust, but removing the exhaust completely and bolting on a nice collector extension about 10-12" would probably net you 1-2 more mph. Between the weight and the fact that your engine/cam/heads are not designed for an exhaust system should net you more HP, which likely is the reason the engine wants to be shifted lower in rpm.

I also think your suspension needs alot of tuning to really make good USE of your HP. You have to overcome a heavy car, so good working suspension is even more important than on a lighter car IMO.

Sounds like I need to be there next time you go out....would be good to go back to the races!!