Well Team, Update time !
Bought the parts, checked the local prices and scheduled a Home Visit Mechanic (yourmechanic.com) to come out to the house this past Monday.
Guy showed up on time, did a nice job of changing the plugs, and wires and coil pak ( I changed the airfilter while I was waiting for him to show up - it looked original for 17 K miles)
No noticeable issues with wires, but plugs were all rather "rusty and crusty" ... quite possibly originals? They were generally "tan" but the porcelain body was very dark at the connection to the threaded piece.
Coil pak did have some "goo" leaking on the backside next to the ICM, wiped it off the seals, reconnected the wires to the clips and bolted everything together.
Fired right up! Ran it to work yesterday (1/2 at 40 mph side streets and 1/2 at freeway) and back home (all freeway 25 miles) at 100degrees outside temp.
Result: pulled like a dream up to 85 mph, cruised smooth, no "burbles, vibrations, etc" under acceleration load. Let it coast back down to 60 and repeated the accleration load test 3-4 times up to 80, never missed a beat !
Thank you to Ronnie, Ron W, Padgett, 2seater for the advice and encouragement.
Going to hunt down and replace the fuel filter for good luck, and then on to the radio repair so I can have some tunes !
🙂 Paul