The 1965 Ford Mustang Custom Wagon is one of the most intriguing “what-if” scenarios in automotive history brought to life through dedicated craftsmanship. Originally conceptualized and built by Ford designer William Sibo in 1990, this vehicle reimagines the iconic first-generation pony car as a functional yet stylish shooting brake. Designed initially as a delivery vehicle for his wife’s business, the project successfully maintains the classic Mustang face while extending the roofline into a seamless wagon profile. It stands as a testament to creative engineering, offering a silhouette that Ford never officially put into production.
A Bespoke Silhouette Finished in Slate Gray Metallic
The exterior character of this Mustang is defined by its expertly modified roofline, which transitions the notchback into a purposeful long-roof wagon. Finished in Slate Gray Metallic with subtle purple pinstriping, the body retains aggressive performance cues like a prominent hood scoop and fog lights. The stance is modernized via five-lug Mustang wheels wrapped in 225/45ZR17 tires, providing a contemporary edge to the 1960s aesthetic. Tinted windows and chrome-accented trim pieces highlight the professional level of finish achieved by Sibo, ensuring the car looks like a factory prototype rather than a standard custom build.
Custom Tweed and Leather Cabin Refinement
Inside, the four-seat interior has been meticulously tailored to provide a mix of 1990s luxury and classic muscle car ergonomics. The cabin features gray tweed and leather upholstery paired with gray cut-pile carpeting, creating a cohesive and comfortable environment for long-distance cruising. Modern amenities have been integrated throughout, including an air conditioning system and an updated AM/FM/Bluetooth audio unit for contemporary connectivity. A black leather-wrapped Mustang steering wheel sits before chrome-accented dash instruments, balancing the bespoke nature of the wagon conversion with the familiar spirit of the original 1965 donor car.
Big Block Muscle with 429 V-8 Authority
Under the hood, this custom wagon discards the standard small-block for the sheer authority of a 429 V-8 engine. This massive powerplant produces 370 hp/375 PS and is paired with a heavy-duty C6 automatic transmission for reliable power delivery. The mechanical setup is further enhanced by a dual exhaust system that provides a deep, resonant soundtrack suitable for a big-block Ford. Braking is handled by power-assisted front discs and rear drums, ensuring the added weight of the wagon body is managed effectively during spirited drives or daily operation.
| Technical Specifications | |
|---|---|
| Make | Ford |
| Model | Mustang |
| Trim | Custom Wagon |
| Year | 1965 |
| Engine | 429 V-8 |
| Transmission | C6 Automatic |
| Wheels | 17-inch 5-lug |
| Tires | 225/45ZR17 |
| Odometer | 6,180 Miles |
A Rare Collector Opportunity at Glendale 2026
As it prepares to cross the block on Thursday, March 19th, at the Glendale 2026 auction, this Mustang represents a unique intersection of designer provenance and custom muscle. While standard 1965 Mustangs are plentiful, a shooting brake conversion executed by a Ford-contracted designer is virtually non-existent on the open market. Its history in Arizona since 2008 has helped preserve the high-quality build, making it an exceptional acquisition for a collector who values rarity and functional design. It serves as a conversation piece that challenges the traditional boundaries of the pony car segment.
The Ultimate Long-Roof Pony Car Legacy
The 1965 Ford Mustang Custom Wagon remains a brilliant example of automotive imagination made real. By combining the heart of a big-block V-8 with a sophisticated, hand-built shooting brake body, William Sibo created a vehicle that is as practical as it is powerful. It stands not just as a custom car, but as a fully realized design study that continues to captivate enthusiasts decades after its completion.
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Source: mecum.com
