Yeah, was born in 70. My first pick up at 16, was a 65 Ford. I changed plugs and wires pretty often in my late teens, because I didn't know any better.
But from the 55, 65, 68, 69, 71, 75, 82, 84, 88 & 95 Ford's I've ever owned, I've never seen sparks coming from the plugs (installed) or the wires.