That gave me some new insight on my pro cons for a 5 vs 6 speed. I would like to have a nice lobing cam. I will more then likely have a 4.10 rear end running 26 inch diameter tires. I know I won't get great gas mileage but I do like not winding the engine out when I am cruising down the highway. What kind of mileage do you guys get out of your 5 or 6 speeds? I know there is another forum but that is for stock 440's without overdrive.