Ford Ranger low RPM misfire?

2000 Ford Ranger 3.0L 2WD.

I’m having a tough time figuring out if it’s trans shudder or a misfire but leaning towards misfire at this point. The rumbling really starts to happen during converter lockup but it also does it pulling out from a stop sign or red light until I accelerate to get the RPM’s up it sort of smooths out. I did notice it pecking cruising down the road especially on the highway I get a kick here and there which makes me think it’s a misfire but it doesn’t seem to do it under heavy load but only when I get cruising along. I did change the trans fluid and filter the other day to try and rule out shudder but it’s still doing it some I’m thinking it’s a misfire now. Anyone have any ideas on what could be causing it? Could it be the beginning of wires breaking down or maybe dirty failing injectors?