1. Pontiac Trans Am 455 SD
By 1974, almost all muscle cars were extinct from the market, and those who were left were robbed of their power and style. However, there was one model that managed to survive and to offer as much performance and power as possible, and that model was the ’74 Trans Am Super Duty 455.
The year 1974 marked the first restyling of the whole Firebird range, and with new front and the rear end came the improved interior and details. The SD 455 model was carried over from 1973. It featured better suspension and brakes in the new package. The standard 455 V8 had only 215 HP, but it developed 290 HP in SD trim, which was fantastic for 1974. These one-year wonders are the rare muscle cars made for only one model year. So if you can find one of these rare gems, consider yourself lucky. Not many people have the pleasure of owning or driving these cars nowadays.