[93sub]

My '93 Sub. with a 350 and 178,000 miles is running rough at idle. Seems to be more noticeable when in gear. Doesn't really seem like a miss, but not saying it isn't. Also power on acceleration seems down.

I have replaced plugs, distributor cap, rotor, and PCV valve. I ohmed out wires with the highest being 16,000 ohms on the longest. I doubled checked the routing of the wires and they are not crossed. The catalytic converter wasn't glowing red tonight when I got home. The fuel pump was replaced about 80,000 miles ago as preventive maintenance. Pump still sounds the same as when it was replaced.

I'm looking for thoughts on what to check next. I have not done a compression check. Would need help on how to disable fuel system if I do this next.
Thanks