Its not as simple as grabbing a heap of parts and slapping em on to the motor.

i am in the process of this also, and its a lot harder than it seems. It always is isnt it.

Your shoppinng list would include at least

4 injectors, correct size for motor
a custom manifold with bossess set at correct angle.
throttle body and custom plenum chamber
computer
a pallet of paitence
rising rate fuel pump (if turboed) or an efi fuel pump
custom fuel rail, with return lines installed.

plus lots of other stuff that I havent worked out yet, which I am sure that someone else can add on