A low-mileage 1964 Chevrolet Impala SS conceals an original component under the hood.

A 1964 Chevrolet Impala SS that conceals an original engine under the hood is an especially uncommon and valuable automobile.

The Impala SS served as the pinnacle variant of the 1964 best-selling automobile in the United States, the Impala.

The Impala SS was available with V8 engines ranging from the 283 to the 409, but the 327 L76 is the most coveted.

This solid-lifter, high-compression variant of the 327 engine produced 365 horsepower and 350 lb-ft of torque.

Furthermore, the Corvette Sting Ray was propelled by the identical engine.

One year was all that the 327 L76 was offered in the Impala SS, and a mere 1,894 units were manufactured.