I highly doubt it's an electrical connection to sensor issue, I just used them as examples

. But Google can be your friend regarding sensor locations. There's not much running down the back of the motor: MAP, Rear Knock, O2's, Oil Pressure, Speed Sensor... Might be missing one or two. There should be a vacuum routing sticker under your hood somewhere showing you what all's back there. I know there's the EVAP and MAP above the valve cover, both have those brittle vacuum lines running to them.
Hope others chime in to, I'm by far smart when it comes to these cars.. LOL I understand the frustration, I spent 4 hours today tracking down an electrical gremlin in my car...
I'm more of a 4-5 wire hook up late 60's early 70's model car guy myself (I'm only 33 though LOL) but I'm learning more about the computer controled stuff. My LT1 car is fun and still pretty simple. if it blows I'll do an LS swap probably, might just build the LT1 to a 383 and be done with it but that's later down the road.