If your pressure is good according to the sort of consensus Patrick posted - which is in line with my general experience with big Ford engines - I wouldn't bother boosting the
oil pump capacity. A standard pump (of the PI or CJ level) on a tight engine is plenty. When you go to the high vol/high pressure pumps, you're wasting HP to drive it, risking distributor drive gear shear, and not gaining a whole lot except bragging rights.