well what started as a clutch project has went further. with the trans out i can see it needs a new rear-main seal and a oil pan gasket. if i have to put in a new rear main seal and oil pan gasket should i just put in a new oil pump???? the motor is still in the truck and i dont want to pull it.250k on it now and doesnt smoke or carryon but i am paranoid about these small things.Is the rear main seal a pain to get out?? i dont have to pull the crank to get it out do I????