Another way to go, which is expensive but cool is Holley's new sniper quad fuel injection, which I'd love to try, they have come up with a real cool fuel injection system that doesn't require a lot, almost all either use a external pump which is sure to fail OR an in tank pump and they require you to run a return line, even the Fitech pump system requires a vent return, what Holley has done is come up with a pump/gauge sender system that has the pump in the tank but the bypass is also in the tank, so no return line required which knock down the % of fires by 50%, and it fits your tank, you take out the gauge sender and replace it in the same spot.
These are links to those products.

Sniper Quadrojet - https://www.holley.com/products/fuel_systems/fuel_injection/sniper_efi/sniper_efi_quadrajet/

In tank fuel module & sender - https://www.holley.com/products/fue...umps/muscle_car_efi_modules/parts/12-300

What's cool about FI is it doesn't care if your car has a 326, 350, 400 or 455 or ? it will automatically adjust and keep your fuel/air ratio perfect and make our cars more environmentally friendly, my only problem with it is the cost and the fact that I drive mine about 1000 miles a year, they'll be no payback except for no carb or ethanol headaches at all.