This 1966 Chevrolet Chevelle went through a complete frame-off restoration in 2013, emerging with a GM 396 big block, Muncie four-speed, and 12-bolt Posi rear end built for driving hard, not just showing. Vanguard Motor Sales’ listing includes over 100 photos and a detailed rundown of everything replaced underneath the fresh paint. But the engine’s casting numbers don’t quite match the car’s build year. Watch to see what that discrepancy actually means for the car.