How can I be sure a fender is an original and not a repro. I have an extra one I think is original that I want to sell, but I don't want to rip anyone off if its not. I'd just like to make sure.

Thanks, Tim

off the car they are easy to tell ,,,,,
just pick them up the gm one will weigh as much as two repo's if you have two side by side you could tell that way very easy ,,,,

I read a post a while back saying the original weighs about 24- while the repo weighs around 21.