Hello, I have a 1989 Ford F350 with a 460 that I am going to pull and replace with an 8.2L Detroit Diesel. I bought the 8.2L from a guy that pulled it from a street sweeper. I have a question with more to come im sure, hoping someone can help. Do I need a lift pump or a sending unit to get fuel to the motor or will the motor pull the fuel from the tank?