In the direction of fuel flow:
1. New gas tank with EFI pump. Thanks are cheap, and an external pump is noisy, less safe.
2. NPT to AN adapter, AN hose end, short length of EFI hose, route through chassis with a grommet, AN hose end, AN to flare adapter.
3. 3/8" steel supply line, double flares both ends.
4. Flare to NPT adapter.
5. 10 micron high pressure fuel filter.
6. NPT to AN adapter, AN hose end, short length of EFI hose, AN hose end.
7. Choose either throttle body EFI or port injection. Single plane intake manifold.
8. AN hose end, short length of EFI hose, AN hose end, AN to NPT adapter.
9. Pressure regulator.
10. NPT to flare adapter.
11. 1/4" steel return line, double flares on both ends.
12. Flare to AN adapter, AN hose end, short length of EFI hose, route through chassis with a grommet, AN hose end, AN to NPT adapter.
13. See item 1.
Also need a bung welded onto the exhaust far enough from the headers or exhaust manifolds. This with carry the oxygen sensor that the EFI system needs.
Wiring for the EFI CPU. Usually this is powered directly from the battery. I like to mount these in the passenger compartment under the dash. Inputs from the throttle body, oxygen sensor, outputs to the injectors. There are about 30 or so wires in a computer-type connector that have to be routed correctly. Take your time, read the instructions and work through it.