I just spoke to Denny Ford. That Chevelle was his. He completed the car in '74 when he worked at Yenko. The car was originally a 300hp car that he stuffed with a 427. It wasn't until '78 that he painted it in that scheme.
He's currently running his '62 Biscayne in legal B/S and it goes 10.86. More than competitive!
Verne