[Frank Messina]

Despite what you may hear to the contrary, the filter is correctly placed AFTER the pump as the pump will push adequate fuel through even as it accumulates debris. Putting it on the inlet side will starve the pump as there is no suction, only gravity feed. Be sure to use a return style regulator. This will prevent cavitation in the pump insuring a steady flow of fuel and extend pump life by helping keep the pump cool. Mallory and Moroso both make log style return type regulators that mount right next to the carb which cleans up the plumbing. Work great too. I've used Holley pumps for years with good success following the above guidelines. Oh and they hum pretty vigorously which is the nature of the beast. If it doesn't hum it isn't working. After a couple minutes I don't notice it anymore.
Frank