HIGH PERFORMANCE
MUSTANGS AND sHELBY’s

We buy, sell, and restore rare & limited production muscle cars

About Us

Founded in the fall of 1999, Signature Auto / Bosscars.com is celebrating 25 years of excellence as a premier destination for rare American muscle. Specializing in iconic big block Mustangs, Shelbys, and other unique, high-performance classics, we’ve built a reputation for delivering extraordinary service and quality. Our team lives and breathes cars, treating every restoration, sale, and interaction as a chance to share our passion for automotive history.

From meticulously restored showpieces to rare project finds, we’re committed to connecting enthusiasts with the cars that fuel their dreams. If you’re looking for something unique, explore our site—whether to buy, restore, or discover your next project, Signature Auto is here to make it happen.

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What We’ve Got

Current Inventory

1972 Mustang Sprint Olympiad Special Edition

This rare 1972 Ford Mustang Sprint SportsRoof, is a stunning example of the limited Olympiad Edition, built to celebrate American pride during the 1972 Olympics

1967 Mustang GT S-Code Convertible In Silver Frost

A concours-quality 1967 Mustang GT Convertible, restored from a 100% rust-free California/Texas car and finished in rare Silver Frost over black—one of just 421 built in this combination. Retaining its original S-Code 390 big block with rebuilt C6 and fully refreshed drivetrain and suspension, it’s both investment-grade and genuinely enjoyable to drive. With factory A/C,…

1967 Shelby GT500 Tribute In Black

A striking 1967 Shelby GT500 Tribute, built from a factory V8 Fastback and finished in classic black over a black interior, capturing the aggressive presence of Carroll Shelby’s original design. Powered by a 427 Medium Riser with dual four-barrels and a four-speed manual, it delivers authentic muscle-car performance with modern drivability upgrades. This is a…

1973 Mach 1 Cobra Jet Q-Code in Gold Glow

A beautifully documented 1973 Mustang Mach 1, finished in rare Gold Glow with a Black Levant vinyl roof and powered by a 351 4V V8 paired to a four-speed manual. One of only 405 built in this paint and trim combination, it features hallmark Mach 1 styling including the NASA hood, forged aluminum wheels, and…

1969 Mercury Cougar XR7 in Aztec Aqua

A beautifully preserved 1969 Mercury Cougar XR7, finished in striking Aztec Aqua and showing just 21,994 miles. Powered by a 351 Windsor with Select-Shift automatic, it’s richly optioned with the XR7 package, power steering, power front disc brakes, and factory air conditioning for effortless cruising. An elegant, low-mile example that blends classic Mercury luxury with…

1965 Mustang 289 Convertible A-Code in Twilight Turquoise – PROJECT

A rare 1965 Mustang Convertible 289 A-Code project, finished in striking Twilight Turquoise with a black top and showing 80,650 actual miles. Retaining its original A-Code 289 along with factory power steering, power brakes, and air conditioning, it offers an excellent foundation for a proper restoration. A desirable, well-optioned early Mustang that’s ready to be…

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LEARN FROM THE EXPERTS

Video Library

Embark on a journey with Rick Parker, our nationally acclaimed Mustang enthusiast and an award-winning Big Block restoration expert. In these must-watch how-to videos, Rick shares his unparalleled expertise, garnered from 45 years of dedicated passion for all things Mustang.

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