'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.
We still had a spark plug cleaner at Eastown Chev in the late 80's. I'd pull the plugs on my straight 6 Biscayne and clean them just for the heck of it.