I know. If I can get the fuel mileage up to 10 MPG I would be ecstatic. If I can get this 454 up to 10 MPG I will keep it. I have a friend that has a school bus, his son wanted the engine that was in it to put in his truck sold the truck, now the bus is sitting without the engine, He wants to trade me the diesel engine for my 454. I am tempted. The diesel was hooked up to the same transmission that is in my motorhome I wonder if it would fit into the space. I most likely will keep the 454, but I got to get the mileage up. Somehow.