thinking of switching to electric fuel pump

I wouldn't run a electric pump unless I could run one like LXGuy mentioned, or one of the Holley gerotor types. I had a Holley blue pump on my Cuda for a short while. Sounded like a freakin chain saw running. Tried insulating it with a thick rubber mat but to no avail. Worked good, just drove me crazy even with loud exhaust. Most any mechanical fuel pump will keep up with your 318 but if you plan on future upgrades go with a Holley or Carter high output mechanical pump.