Nice car. A friend of mine at work said that he had a cortez silver w/black stripe LS6 Chevelle back in the late 70s. It was a M22 4.10 car as well. However, he said that the original engine was blown when he bought it and it had a 396 in it when he drove it. It could be the same car.
We are only 2 1/2 hours from Atlanta.