1970-71 Plymouth Duster 340 coupe
In the world of muscle performance, Plymouth and other Mopar brands were once the marque everyone else looked to, but the days of the gas-guzzling big-blocks were slowing (c’mon, gas was hovering at 35 cents a gallon). So the powerful little 340 became the hot ticket for its speed, looks and the wide assortment of upgrades and accessories that made these cars go faster. Current KBB Early Model Value, in to good to excellent condition: $12,200 to $21,900. (Photo by Phil Skinner)