The oil pump is located on the outside of the engine, on the right ( passenger) side lower front corner of the block. The oil filter is mounted directly on the pump. Like mentioned above, be VERY careful not to ding the surface where the pump mounts to the block, where the gasket lays. And the gasket thickness is the other VERY important item. Measuring the gasket with a micrometer is one way to determine if it's a good one, like under '007 inch thick. Read the above posts before you remove the pump.
Hope this will help some !!