I came across a '69 Z/28 for sale on line a few years ago that claimed to be the one that Chris Walken drove in "At Close Range". It was Dusk Blue though with a long story about how it was painted silver for the movie and then put back to blue. Did not ring true to me. I always remember that movie because I had a twin to that Z/28 when I was in high school!
That story is false. I know the person that owns it and has owned it since 1970 or 71.. The car is actually Glacier Blue and not silver. It is an early build Z.