Put some gas in the intake and crank it, if it is a fuel issue engine will start then die, if it is a spark issue it won't start.
How is the timing belt?
Fuel injection requires some type of controller, "computer" is often the term used, or ECU, PCM, EEC.
So if you want no computer then you will be using a carburetor, period.
There are after-market fuel injection "controllers" but you are trading one "computer" for another, lol, benefit in this is that the 3rd party computer can be adjusted to suit your needs.
Electronic ignition systems, don't all use controllers, some do.
If the distributor has a vacuum advance system it usually doesn't since the controller or module(ICM, ignition control module), was added to more accurately set spark timing, dwell and advance.
Yes, DuraSpark used vacuum advance and analog sensor instead of points, you can use a GM 4-pin HEI module with duraspark distributor for a very inexpensive and reliable ignition system. GM 4-pin HEI module runs about $25
There were two types of Ford TFI systems, TFI-IV(early, most were grey) which controlled dwell but not advance, and TFI-CCD(late, all were black) which relied on "computer" for dwell and advance, so both needed outside control for spark advance.
If you keep the computer, but changed the ignition system to non-computer assisted, then there is the problem of syncing the spark and fuel injectors, if a distributor is used then that "pulse" is what is used for the sync and starting the fuel injectors, which is why the TFI modules were connected to the computer to start with.
The computer doesn't know the engine is even rotating without this pulse, so no fuel flow would be started.
This pulse was from distributor sensor and then on distributorless engines a Crank position sensor was used to generate the pulse.