Aeromotive Phantom in-tank fuel pump

[ShelbyDogg]

Just throwing this out there,
Is there a mechanical pump that can deliver the higher PSI required for EFI?
Could you not add a small pressurized reserve tank down stream of a mechanical pump with a check valve to lock in pressure for start up? I would assume it would need some sort of relief valve for hot days.
Thoughts?

For around $100 an EFI pump does the job and you don't have a pressurized tank on your car.   Some pumps last the life of the car. I had a civic that still had an original pump with close to 260k when the engine quit, due to lack of oil.  A pressurized tank is dangerous

[Chryco Psycho]

you will need a minimum 50 PSI , I do not know of anything mechanical that can build that pressure

[Plum Crazy 71]

Here is mine that we put in my Challenger/472 Hemi.