HERE is a reason I like Hagerty insurance, and their monthly magazine.

Hagerty put out the article I link to at the bottom of this post, and points out some problems they've seen at auctions and car shows. Guess which one of these Oldsmobiles has the stripe on right

And this engine decal? Was never on a production car. It's a made up imaginary look at what some repop company figures people want to buy and put on their engine

 https://www.hagerty.com/media/buying-and-selling/common-muscle-car-restoration-gaffes-noticing-these-transgressions-could-save-you-some-money