What features makes a 1967 mustang coupe most valuable?

The value of a 1967 Mustang coupe is significantly influenced by several key features, including its engine type, such as the desirable 289 or 302 V8 options, and the presence of original, matching numbers components. Additional factors include the car's condition, rarity, and factory options like air conditioning or a four-speed manual transmission. Limited editions or models with unique features, such as the GT package, also command higher prices in the collector market. Overall, well-documented provenance and a history of maintenance can further enhance its value.