Ok guys, this is what I did and what I found. I bought some new wires and was going to change them out this morning when the engine was stone cold, but I got bored last night after dark and wondered if I could see any arcing under the hood after dark. I didn't see any arcing, but what I heard under the hood sounded like I had a header gasket just starting to blow out on the passenger bank of the engine, so I shut it down made a mental note to chase down the header leak in the morning and called it a night.

Got up this morning and over my cup of coffee I wondered if the leak I heard could be from a loose spark plug, so that's where I started this morning and I found the #8 plug was loose and leaking compression. It wasn't loose enough to wiggle around, but it was almost a turn from seating on the washer. I inspected all the wires and they all look good and since I saw no arcing last night I put the new set on the shelf in the man cave for later on sometime. I also checked all the header bolts and intake bolts and they were all good, so I'll drive it a few days and hopefully the miss is gone for good.