The 1969 Ford Mustang Boss 429 Fastback represents the absolute apex of Ford’s muscle car engineering. Developed to homologate the massive 429 engine for NASCAR competition, these cars were hand-assembled at Kar Kraft in Brighton, Michigan. This specific example, identified as KK No. 2017, stands out due to its incredible level of preservation and authenticity. It retains its original matching numbers engine and the rare factory Black Jade exterior finish. Such highly documented survivors are rare in the collector market, especially those coming from long-term private collections. This machine offers a direct connection to the peak of the 1960s horsepower wars. Every detail, from the oversized hood scoop to the staggered shocks, serves as a reminder of its racing pedigree.
Matching Numbers and Engineering Excellence
The core of this 1969 Ford Mustang Boss 429 Fastback is the original 429 CI V8 engine. Grimes Engineering recently completed a full rebuild of this legendary power plant to exacting standards. Since the completion of this specialized work, the car has traveled only 92 miles to ensure everything is perfect. The engine bay has been meticulously repainted to match the high quality of the rebuilt block and its components. These “semi-hemi” engines are famous for their aluminum cylinder heads and massive flow capabilities. Consequently, the mechanical health of this vehicle is as impressive as its historical documentation. This investment in the powertrain ensures that the Boss remains a formidable performer on any road today.
Preserved Interior and Original Documentation
Stepping inside reveals a time-capsule environment with the original Black vinyl interior still in place. The cabin reflects the premium status Ford assigned to the Boss 429 as its flagship performance model. It features the Deluxe interior package with wood-grain accents and a functional cockpit layout. Documentation is a vital part of this car’s value, including the original build sheet and an Elite Marti Report. Even the original door plate remains intact, confirming its identity and factory specifications. An original space saver spare tire and jack are still housed in the trunk for maximum authenticity. These items provide collectors with the verification needed to confirm this as a blue-chip automotive investment.
Specialized Maintenance and Suspension Tuning
Maintaining a vehicle of this caliber requires specialists who understand the unique requirements of the Boss 429 platform. Conover Racing and Restoration performed a comprehensive suspension, tuning, and clutch service to optimize drivability. This ensures the 1969 Ford Mustang Boss 429 Fastback handles its immense power with stability and grace. Additionally, Gary Jones Motorsports handled the service for the bearings, brakes, and seals to ensure safety. These experts focused on preserving the original feel while ensuring every mechanical system functions reliably. The car now sits on a set of fresh Michelin tires for improved grip and safety during transit. Such professional attention highlights the dedication required to keep a Kar Kraft legend in peak condition.
Authentic Accents and Rare Factory Features
The exterior of this Mustang is a study in aggressive restraint, finished in the subtle and rare Black Jade hue. This color shifts under different lighting conditions, adding a layer of sophistication to the muscular Fastback lines. The car still carries its original shifter and linkage, though these are included separately to preserve them. Every body panel reflects the high standards of a vehicle that was once the centerpiece of a private collection. The massive front spoiler and specialized fenders were factory requirements to fit the wide 429 engine. These visual cues are unmistakable to enthusiasts and confirm the car’s status as a true Boss. It remains one of the most recognizable silhouettes in the history of American performance.
NASCAR Pedigree and Performance Specs
The 429 CI V-8 engine was factory rated at 375 horsepower, though many believe the actual output was much higher. It features a massive four-barrel carburetor and high-flow cylinder heads designed for high-RPM endurance. This power is managed by a heavy-duty 4-speed manual transmission that allows for precise control over the torque. The odometer shows 41,406 miles, which is a relatively low figure for a street-legal racing machine from 1969. With only 92 miles since the Grimes Engineering rebuild, the engine is barely broken in. This car was built to dominate the track, and that raw capability is still palpable when the key is turned. It provides a visceral driving experience that modern cars struggle to replicate.
Summary of a Kar Kraft Masterpiece
This 1969 Ford Mustang Boss 429 Fastback is a premier example of the most desirable Mustang ever produced. Its combination of matching numbers, rare original paint, and professional restoration work makes it a world-class collectible. The inclusion of the original build sheet and Marti Report provides ironclad provenance for the next owner. Having been part of a private collection, it has clearly been treated with the respect a KK-numbered car deserves. It stands ready for the Glendale 2026 auction as a highlight of the weekend’s offerings. This is a rare opportunity to acquire a piece of Ford’s racing history in its most authentic form. It remains the definitive muscle car for the serious Ford enthusiast.
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Source: mecum.com
