1995 Chevy Blazer After replacing the CPI truck runs rough

Engine Mechanical problem
1995 Chevy Blazer 6 cyl Four Wheel Drive Automatic

Also after running for a bit the catalytic converter glowed red hot. I replaced the catalytic converter and the #2 oxygen sensor and the spark plugs and it still ran very rough and the converter and the pipe to the muffler still glowed red hot. I didn't replace the #1 O2 sensor in front of the converter should I have replaced it too? Also after it glowed red do you think that the new #2 O2 sensor and new converter is now bad or can it handle 1 time of being red hot? Did I ruin the new converter and O2 sensor by running it till it was glowing red hot. The truck also has a fairly new muffler and tail pipe is it possible that it is plugged now do to running with red hot converter. So to recap I have installed a new CPI -Spider fuel Injector assembly and a new Catalytic converter, O2 sensor on downstream side and new spark plugs, air filter and oil too. I checked EGR and its not plugged and plunger moves ok. I checked the cap n rotor and they looked fine. So whats next move? The truck runs real rough and missfires and hardly moves when put into gear.