No start

It’s the 5.7 vortech engine. I have 65 psi fuel pressure at the test port on the intake manifold. I have good spark checked it with an in-line spark tester. 15 psi at the map sensor read on scan tool. Replaced plugs, wires, distributor cap and rotor, egr valve, o2 sensors, catalytic converters on both sides of engine, injection spider, fuel pump, filter and strainer. Someone please help me. Always seemed to have a random misfire depending on weather. Til one day it just died driving down the road and haven’t gotten it fired up since.