Hi Ron. I did this exact mod, for the same reason a decade or so ago. I used a late '80s stock Ford TBI electric fuel pump permanently attached to the fuel sender inside the fuel tank. The TBI pump puts out 10-12 psi and can be easily regulated down to 5-7 psi for carbs. An EFI pump runs at 48-55 psi and will overheat and quit if you try to regulate it down that much.
Fuel pumps are not marked and look identical, so with used parts- unless you physically pull them off a wreck, you cannot tell them apart. Running a pump inside an uncut Pantera fuel tank is far quieter and handier than running a usually noisy external pump where the power wire can be knocked off, stopping the engine.
There's a POCA Newsletter article in the POCA Archives detailing the mod. I use both a mechanical pump and the TBI pump with a reverse flow valve between the two to my Holley. Still works fine & the e-pump can substitute for a failing mechanical pump on the road. .