i just pretty much did the same things. you did a swap for a 3.8 efi to 5.0 efi.
i did carb to efi.
most likely ur EEC relay isn't getting a turn on signal from ur coil, run an ignition hot wire to the red wire with green stripe. this relay is next to the computer.
this is because the computer harness isn't plugged into body harness on this swap.
check the coil with a test light with the key on.
probally the same problem with ur pump. i ran a hot wire back to the pump manually for power.