FiTech EFI system
I picked up an EFI filter from the auto store for a late model car that has the inlet and outlet on the same side. I have it mounted back at the tank, but after the pump.
The sock/screen in the tank is insufficient to filter chunks and fine debris. A real filter is 100% required after the pump. Not so much because of the damage that debris can do, but because it can plug up the tiny passages in the injectors pretty quick.