OK, I have done several searches and all come up empty so here goes. Lets say I want to buy a used 351 out of a 93 F-150. I will be getting a AOD transmission and as the book says I will not be getting a roller cam engine. Lets also say that I am having it rebuilt and I do want an all around good low maintenance but powerfull motor. What should I have done to the motor for good horsepower and a compromise but realiability and good gas mileage. Ed