If you wanted that you bought a cop car (9C1 RPO code).
RPO 9C1 didn't start until the early 1970s, on Chevelles. Yes, police package cars existed in 1966, but they weren't 9C1.
Well actually the 427 SS didn't come out until 1967 because that was the first year for the 427 bore block
The 427 began in 1966. There were two different 427 engine options available in the B body 1966 (L36 and L72). The 427 was also available in the Corvette in 1966.
Two doors, four doors, wagons, and ragtops.