The car is a street strip car. I just drive it mostly around town nothing to far. 780 hp is some great numbers IQ52! What kind of headers did you run with the RPM heads?
On the day that we dyno tested headers, it made between 770 and 775 HP with our dyno headers by my son (1-3/4 X 1-7/8 X 2" X 3" step headers), custom headers built by my son (2" X 2-1/8" X 3-1/2 step headers) and Hooker 5209-1HKR. They all made the same horsepower in the upper RPMs but the torque varied a great deal in the lower and middle ranges.