How do you replace an oil pump on a 1989 Toyota MR2?

To replace the oil pump on a 1989 Toyota MR2, first, ensure the vehicle is on a level surface and disconnect the battery. Remove the engine oil and oil pan, followed by the timing belt or chain to access the oil pump. Unbolt the old oil pump from the engine block, then install the new pump, ensuring all gaskets are properly seated. Finally, reassemble the oil pan, timing belt, and refill the engine with oil before reconnecting the battery and starting the engine.