electric fuel pump with stock gas tank

The pump looks like a Bosch style efi pump, it is backwards. They typically have high pressure output, to about 100 psi, so not really good for carb. While the pressure can be regulated, the system will not be efficient, and will heat fuel.

I have used several in EFI projects including turbos. There is an inlet fuel filter with 13mm (1/2") connection to input side of pump, with a 8mm (5/16") filter inlet to connect to tank outlet. As others suggest the pump needs to lower. Early Mopar 2.2L Omni Turbo used a Bosch external, then converted to in-tank. It was mounted ahead of the wheel housing on passenger side on lower inner frame rail. A similar A-body location would be near front spring hanger, not sure if room exists.