OEM plugged wires say "1991"...are these ORIGINAL???

[93RTTurbo]

I was steam cleaning the engine of the Straman, and going over it for the upcoming roadtrip. Doing the usual checks, looking for cracked or pinched wires, leaks, any potential problems under the hood that a "Class A" visual inspection might turn up.

Looking very closely at the plug wires, I noticed they do say "1991" on them.

My question is, do replacement wires you get from the dealer, also have the exact year of the car printed on them, like this? Because if they don't, it makes me wonder if these plug wires are the factory originals???

Which would likely mean the spark plugs are original, and the 60k service has never been done? And it's the original, 17 year old timing belt?

I didn't get any real service records when I bought the car; and the odd thing, is that when I went to the Dodge dealer to pull a lifetime service history on this car, it was as if it didn't exist! They showed it had been sold at a Dodge dealer in southern California, but after that, there was no record of the car ever appearing at another Dodge dealer for service, ever again. Which, considering that a Dodge dealer isn't exactly one's best bet for servicing these cars, you'd think that it would have been back at least once, under warrantee or something. But there are zero records.

But, under the hood, are the dealer stickers indicating the recall (for emissions) was done, by a Dodge dealer, didn't say which one. So it had to have been back to a Dodge dealer since it was sold brand new literally off the showroom floor. Yet it is not in their system...any of them.

Carfax was kind of strange, too, although it has been a while since I had one of those pulled, and I forget what it said. But it looked like it might have been titled as part of a "fleet" or "rental" at one time? Weird.

The car is overall in excellent shape; there is no indication of neglect whatsoever, and it has obviously been garage kept all its life. The engine was very clean, it looked like it had been well cared for. And it runs beautifully, except a bit of a miss under heavy acceleration, which is why I took a close look at the plug wires.

It had, I forget, 90k on it when I bought it in the fall of 2006; has about 104k on it now.

If I ordered plug wires from the dealer for my '91 Stealth R/T, will they actually be stamped "1991"?

Or does the "1991" stamp on them, mean they were manufactured in 1991, and I still have the original plug wires? And how can everything else have been so obviously meticulously maintained, yet the plug wires never been changed? Makes no sense.

What do you guys think, are these plug wires factory originals, and that the car has received possibly NO maintenance its entire life? Looking at the car, and driving it, a 17 year old Stealth R/T, I find it hard to believe.