[Bill Wallace]

Kevin, good luck with your project. I have a KC 482 w. stage II heads and 600 hp in a 2100 lb. Kirkham. The motor runs great, plenty of torque, but the only thing I would add to the comments the others have made is that with the configuration I have I have to run the engine at about 2000 rpm all of the time in order to keep it from lugging. That pretty much implies a gas mileage figure of ~10 mpg. The cam, rear end ratio and head configuration you pick will have the greatest effect on your mileage goals.