Why are people collecting trim tags?

[Jeff H]

I think some of the guys buying the tags are trying to get them off the market so bogus cars can't be created from them. Generally, the VIN does tie into a build date so you'd have to find the right tag for your car to turn it into something else. But during some of the real busy time periods, there were a lot of cars built so it might not be hard to find a Z28 trim tag to put on your 307 car.