You may want to check the pump before you buy a different one.

To check it: torque the pump down, and with engine upside down on stand, put some playdough or modeling clay on the pick-up. Next put the gasket on dry and gently put the pan on, and torque down the pan bolts. Next, remove the pan, easily cut the clay in half and measure the thickness.The clearance you're looking for is about 1/2 inch.

If I'm wrong on the clearance,somebody correct me;but I think this is right

I would try this first bud; you can't always go by what you hear!