Sorry Bud, I've got no extras myself but I do know they don't repro those yet.
As intricate and difficult to make as they look I don't see anyone making good ones ever. It's not like Chevelles for instance that are stamped basicly flat and have hidden flanges on the front. Anybody who tries to make 'CUDA fenders will have to get all those compound curves just right and I don't think the thin gauge metal they use will work.
Probably why the Challenger fenders aren't working out too well
I guess E-gay is the only way unless someone gets lucky at a swapmeet