Misfire and bog above 3k not spout connector

[Datred87]

I’m having an issue with my 1994 Mustang GT 5.0 High Output. The car is experiencing a misfire and a noticeable bog above 4000 RPM. I’ve replaced the fuel filter, fuel injectors, checked maf with a multimeter but no real way to test single wore so may just a change it, cleaned the fuel rail, changed and gapped the spark plugs, changed spout connector, verified the spark plug wire order, replaced the ignition coil, changed the cap and rotor, replaced the ignition control module on the passenger side fender, changed the fuel pressure regulator, and replaced the EGR valve. No check engine light. All stock