MY question is ! Does anyone know if it was possible to have ordered after 1998 1/2 a 12V engine in that year or later? I had a person tell me he has a 2001 with a 12 valve that he ordered from the factory. Since the truck wasn't there I have no way of knowing what it was. Could it have been possible for the factory to use up excess 12V engines or something? Maybe there are some sales people out there who might know. Thanks