[Formulajones]

If you decide to go the route JLMounce mentioned, with an external regulator, and you want the option of switching from carb to EFI, the regulator I always use is the 13301 Aeromotive which is a return style.
It comes with both springs, setup for carb out of the box and the EFI spring comes with it to swap in later. So with this type of fuel system in place, going to EFI is as simple as swapping the spring in the regulator and you're done.

I prefer to mount these close to the EFI unit for most accurate pressure at the injectors (or carb) and run a full length return line, keeping the stagnant fuel line as short as possible. Or some run the fuel line in and out of the EFI unit, then install the regulator in the return on the way back to the tank. Couple ways of doing it.