Shelby Mustang GT500 Rocks Super-Rare Factory Options, but the Model Year Is Not to Everyone’s Taste – autoevolution

The 1967 Shelby Mustang GT500 remains one of the most sought-after collector cars, with specific factory-ordered options significantly impacting its market valuation. While its performance capabilities and iconic design are well-documented by the Shelby American Automobile Club, the vehicle’s desirability is often tied to its original configuration, which can vary wildly between individual chassis numbers.

Why Do Specific Options Drive GT500 Value?

Collectors prioritize originality and documentation when assessing the value of a 1967 Shelby Mustang GT500. According to Ford’s historical records, the 1967 model year marked the first time the GT500 was produced, featuring a 428 cubic-inch "Police Interceptor" V8 engine.

Values fluctuate based on the presence of rare factory-installed features, such as:

• The "Super Snake" configuration: A limited-run variant featuring a 427-cubic-inch racing engine.
• Interior and Exterior Trim: Specific color combinations and dealer-installed accessories that were not part of the standard production run.
• Transmission choices: While the four-speed manual is generally preferred for performance, the C6 automatic transmission was a common factory option that affects how modern collectors perceive the car’s intended use.

How Does Model Year Perception Affect Market Interest?

The 1967 model year is distinct from the 1968 "King of the Road" iterations, which introduced the 428 Cobra Jet engine. As noted by Hagerty, the 1967 model is often viewed as the "purer" Shelby design, retaining the classic fastback silhouette that defined the early Mustang performance era.

Some enthusiasts argue that the 1967 front-end design, characterized by its elongated nose and specific grille-mounted driving lights, is the definitive Shelby aesthetic. Conversely, others prefer the 1968 updates, which included refined interior ergonomics and improved engine cooling systems. This split in preference means that a 1967 GT500 with rare factory options may command a premium among purists, even if it lacks the later mechanical refinements found in 1968 models.

Documenting Authenticity for Collectors

Because of the high value of these vehicles, professional authentication is standard practice. The Shelby Registry serves as the primary authority for verifying the provenance of a 1967 GT500. Documentation typically includes:

• The original build sheet: This document details the exact specifications as they left the assembly line.
• Marti Reports: These provide a breakdown of how a specific vehicle was equipped compared to the rest of its production run.

Investors and collectors often use these reports to distinguish between authentic high-value options and aftermarket modifications. A car that retains its original engine, transmission, and rare trim options is categorized as a "numbers-matching" vehicle, which typically reaches the highest auction prices.

Summary of Market Factors

The market for the 1967 Shelby Mustang GT500 is unlikely to cool as interest in classic American muscle cars remains robust. Future valuations will likely continue to favor well-documented examples that retain their factory-original configurations, as these vehicles provide the most accurate representation of the collaboration between Carroll Shelby and Ford.