Go Wing - How to determine if original or repop?

I found an ad for a Go Wing on the internet for sale. When I asked for a part number, the owner stated there was no part number stamped on the part. However the owner claimed the Go Wing was not a repop. Should the original part have the part number stamped on it?

Hello, I am not sure about the wing part itself... but the factory pedistals have chrysler part numbers in them.