OK I have read your compliant and I see you say the ECM fried?
Did you determine what caused an ECM failure?
If you feel the fuel pump is working, then after some basic checks, connect a quality scan tool, and check for any trouble codes that would lead you into the direction of a problem area.
Here's what I need to know.
Does the engine have Spark to the spark plugs.
Does the fuel pump run for about 2 seconds when you cycle the key to the on position.
And does the engine run and continue to run when you spray a starting fluid or carb spray down into the throttle body.
Now when you check the fuel pressure on this engine, you need to check to see that the fuel pressure regulator is not failing. If the fuel pressure gage does not hold the pressure at about 60 lbs after the 2 second fuel pump cycle, then you are going to need to get to fuel pressure regulator under the upper intake and replace it.
So basic checks first.
Fuel pressure gage holds at 60 lbs.
Engine has spark
Engine has compression.
And does engine continue to run while spraying starting fluid down the throttle body.
Sometimes just a bad fuel pressure regulator can flood an engine, and with wet spark plugs, the thing just will not start again.