12. Pontiac Trans Am SD-455
The Pontiac Trans Am SD-455 is a muscle car legend, boasting the powerful Super Duty 455 V8 engine and race-ready engineering. Produced in very limited numbers, it stands out sharply from the standard Firebird lineup. Collectors seek out the SD-455 for its raw performance and scarcity. According to Hemmings, this rare trim commands a substantial premium, with values soaring past those of typical Firebirds.