Two years ago I bought an AMD front bumper for my 71 Barracuda and reurned it the next day. It fit nicely but was very wavy along the top. Looked horrible in the sunlight especially from the side looking down the length of it.
At the time AMD told the vendor they were all like that and I would not get anything better. I ended up with a Keystone bumper that looks much better but seems to have more of a "V" shape looking down on it. I think The AMD bumper fit better but the Keystone looks nicer overall.