Fast EZ EFI

Everyone speaks well of the FAST EFI. The main drawback is cost, but most after-market EFI kits are in the $1800 - $3000 range. For a used kit, I see the similar Holley Commander 950 TBI kit go for $600-$700 used on ebay often. I got one for $600 off craigslist. There is also a cheaper MPI version (no intake, just harness). The Commander 950 also controls spark if you install a GM or Ford TBI era distributor-type ignition.

Re fuel supply. True that if your tank gets low, a sudden stop can slosh the fuel and starve the pump. I have had a Holley Pro-jection TBI in my Newport since 1996 and it does that if I get <4 gal. Rare, and it has to be a really hard stop. I just try to keep the tank fuller.