[COPO]

The '67 BM Chevelle was the one and only SS 427 Chevelle built by Motion in '67 so at least one documented car exists. There is a good write-up with pictures in the Motion book that was recently published. The car started as an L-78 396 from the factory and then got an aluminum head Motion built 427 before it was sold as a new car through Baldwin Chevrolet.