Highway Stars used to sell an exact Reproduction of the GM plug wires, they had the cylinder numbers, correct lettering, correct color, and the correct boots. I've got a set on my car and you can't tell they aren't the originals. Definitely a Nice and great product! Of course everything Glen does/has is top notch. I don't see them on their new website though, so I would probably call them to ask if they still have them.