318 EFI to -66 Dart

Search FABO for many posts on fuel pump for EFI. Isn't the blue Holley a low pressure carburetor pump. You need ~55 psi for the multi-point injectors if you have the "beer keg" intake. Check if your fuel rail already has a pressure regulator. I think 1990 did. Sometime, maybe a little later, they went to a return-less system for EPA rules where the reg. was installed in the tank. If no reg., the filter/reg used on Corvettes is a nice solution and ~$20 at O'Reilly's.

Many people use the Walbro external pump. There are only a few external pump choices (under many brand names). I used Walbro to get 3/8" hose fittings. The 90's Ford truck pump seems to have fittings for only 5/16" hose.