Full details & bid : bringatrailer.com
This remarkable 1966 Ford Mustang fastback carries a unique history, originally purchased in 1965 by Air Force Brigadier General Horace D. Aynesworth and gifted to his son as a Christmas present after a drive from Dearborn to the Pentagon. Relocated to Arizona in 1997, the owner subsequently transformed this classic Mustang into a potent track-capable street machine. The heart of this build is a formidable Boss 302 cubic inch V8 engine, enhanced with a 6-71 supercharger, dual Holley four-barrel carburetors, and Edelbrock Performer cylinder heads. This power is channeled through a robust Toploader four-speed manual transmission to a Traction-Lok differential with aggressive 3.70 gears. The Mustang’s body was extensively modified with fiberglass flares, an R-style front end, a Le Mans-style side-fill fuel tank, and a striking Corvette red paint finish. It now rides on a comprehensively upgraded suspension system featuring Koni shocks, stiffer springs, and Alston subframe connectors, paired with SSBC four-wheel disc brakes and 17-inch American Racing wheels. Inside, Scheel bucket seats, aluminum door panels, a Hurst shifter, a roll bar, and polycarbonate windows complete this track-inspired transformation. This exceptional, one-owner Mustang is now offered on dealer consignment with a clean Arizona title held by the owner’s living trust.
Powertrain and Performance Details: The centerpiece of this Mustang’s transformation is its significantly upgraded powertrain. The original engine was replaced with a high-performance Boss 302 cubic inch V8. This potent engine has been further enhanced with a 6-71 supercharger and fed by two Holley four-barrel carburetors, drawing fuel from an Edelbrock mechanical fuel pump and a Holley electric fuel pump. Edelbrock Performer cylinder heads optimize airflow and combustion. Ignition is handled by an MSD Blaster SS coil and a Mallory Unilite distributor. Spent gases are expelled through tri-Y exhaust headers. A lightweight nine-pound aluminum flywheel and a Hays clutch assembly connect the engine to a Toploader four-speed manual transmission. Power is then directed to the rear wheels through a Traction-Lok differential with a performance-oriented 3.70:1 gear ratio. Cooling is managed by a Ron Davis aluminum radiator with dual SPAL electric fans. The custom exhaust system features a cross-over pipe and Flowmaster mufflers, providing an aggressive soundtrack. While specific horsepower and torque figures for this heavily modified engine are not provided, the combination of the Boss 302, supercharger, and dual carburetors suggests a substantial increase in power and exhilarating performance.
Chassis and Handling Upgrades: This Mustang has been meticulously engineered for track-capable handling. The suspension system has been extensively modified with Koni shocks at all four corners, a front strut tower brace for increased rigidity, Alston subframe connectors to stiffen the chassis, lowered upper front control arms, stiffer 620lb-in front coil springs, heavy-duty rear leaf springs with lowering blocks to achieve a lower ride , and a 1-inch front sway bar equipped with polyurethane bushings for improved cornering. Braking performance is significantly enhanced by SSBC Force 10 four-wheel disc brakes with slotted rotors at all corners. The Mustang rides on American Racing 17-inch wheels fitted with 215/45 front and 275/40 rear General G-Max tires, offering excellent grip and handling. The owner states that these modifications have contributed to a reduced curb weight of approximately 2,500 pounds.
Exterior and Interior Modifications: The exterior of this Mustang has undergone a dramatic transformation from its original Ivy Green finish. Around the year 2000, it was disassembled and fitted with a fiberglass hood and fender flares, along with an aggressive R-style front valance. The car was then repainted in vibrant 1980 Corvette Red. Additional modifications include a body-color rear bumper, a honeycomb grille, and Shelby-style polycarbonate rear quarter windows. MR-4000 Lexan was used for the door and back glass, further reducing weight. The hood and trunk are secured by racing-style pins, and a Le Mans-style side-fill fuel tank with a prominent filler has been added. Inside, the rear seats have been removed to accommodate a roll bar for added safety and chassis stiffness. Scheel bucket seats trimmed in black corduroy provide excellent lateral support. Dynamat insulation has been applied under the carpets to reduce noise and vibration. The cabin features aluminum dashboard fascia and door panels, Simpson lap harnesses for secure restraint, billet door handles, a fire extinguisher, and a Hurst shifter topped with a cueball knob for precise gear changes. Column-mounted boost and air/fuel ratio gauges provide critical engine monitoring, while an AutoMeter 8k-rpm tachometer and 120-mph speedometer are joined by a mixed set of auxiliary gauges. The battery has been relocated to the trunk, and a side-fill fuel tank installed.
A Unique, Track-Focused Mustang with a Story: This 1966 Ford Mustang fastback is far from a typical classic. Its one-owner history, unique Christmas gift origin, and comprehensive transformation into a track-capable street machine make it a truly distinctive vehicle. The potent supercharged Boss 302 engine, upgraded four-speed transmission, extensively modified suspension and brakes, and aggressive styling cues combine to create a Mustang that offers exhilarating performance and a commanding presence. This is an opportunity to own a meticulously built, one-of-a-kind Mustang with a compelling personal history.
Summary:
- 1966 Ford Mustang fastback (one owner)
- Supercharged Boss 302ci V8 engine with dual Holley carbs and Edelbrock heads
- Toploader four-speed manual transmission
- Traction-Lok differential with 3.70 gears
- Corvette Red paint with fiberglass flares and R-style front end
- Modified suspension with Koni shocks and upgraded springs
- Alston subframe connectors
- SSBC four-wheel disc brakes
- 17-inch American Racing wheels
- Scheel bucket seats, roll bar, and aluminum interior panels
Disclaimer: Vehicle modifications and specifications are based on the seller’s description. Potential buyers are advised to conduct their own thorough inspection and verification of all components and modifications.
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