The 1968 Shelby GT500KR Convertible remains the undisputed “King of the Road,” representing the peak of Carroll Shelby’s collaboration with Ford during the muscle car era. This specific example, Shelby no. 03717, is a highly decorated survivor that has earned its place on the national stage as an AACA Senior winner and a five-time concours award recipient. Restored to exacting standards by Hunter Willard, the car is finished in its striking factory-correct Acapulco Blue. Crossing the block at Indy 2026 on Friday, May 15th, it offers collectors a rare combination of open-air touring, high-performance big-block power, and documented provenance that includes a Marti Report and the original build sheet.
Acapulco Blue Silhouette and Specialized Shelby Aero
The visual character of this 1968 Shelby GT500KR Convertible is defined by its aggressive, elongated nose and fiberglass hood featuring functional twin air scoops. Finished in Acapulco Blue, the silhouette is punctuated by the integrated rear spoiler and the signature sequential taillights borrowed from the Thunderbird. This model features a power-operated black convertible top with a glass backlite, allowing for a refined profile whether the top is raised or stowed. Tinted glass surrounds the cabin, emphasizing the car’s premium status. Every detail of the exterior reflects the high-level restoration that secured its AACA Senior status, maintaining the specific Shelby badges and trim that distinguished the “King of the Road” from the standard GT500.
Black Interior Decor Group and Factory Air Conditioning
Inside, the cabin offers a sophisticated environment equipped with the Interior Decor Group, featuring black vinyl upholstery and woodgrain accents across the dashboard and center console. This KR is notably equipped with factory air conditioning, a luxury feature that remains highly desirable in high-performance convertibles of this era. The cockpit centers around the driver, featuring a floor-mounted shifter for the 4-speed manual transmission and a comprehensive set of gauges. Refinement meets performance through the inclusion of power steering and power brakes, ensuring the heavy big-block remains manageable during spirited driving. The interior restoration mirrors the quality of the exterior, preserving the tactile feel of the original components while presenting in award-winning condition.
428 Cobra Jet V-8 Narrative and Toploader Gearing
The heart of the 1968 Shelby GT500KR Convertible is the legendary 428 CI Cobra Jet V-8 engine, a powerplant that famously underrated its output to satisfy insurance requirements. This mechanical marvel is mated to a rugged Toploader 4-speed manual transmission, delivering a visceral and authoritative driving experience. Power is sent to the rear wheels via a 3.00 Traction-Lok differential, providing a balance of high-speed cruising stability and low-end torque. While the factory rating was a conservative 335 hp / 340 PS and 440 lb-ft / 597 Nm of torque, the actual performance figures were known to be significantly higher. The result is a car that offers an effortless surge of power, perfectly suited for the open-top grand touring for which the GT500KR was designed.
| Technical Specifications | |
|---|---|
| Engine Type | 428 CI Cobra Jet V-8 |
| Transmission | 4-Speed Toploader Manual |
| Rear Axle | 3.00 Traction-Lok Differential |
| Output | 335 hp / 340 PS |
| Exterior Color | Acapulco Blue |
| Shelby Number | 03717 |
| Restorer | Hunter Willard |
Market Position and the Concours Winner Premium
The GT500KR occupies a dominant market position, frequently benchmarked against the 1968 Chevrolet Corvette 427 or the Plymouth Hemi Cuda. However, the Shelby carries a unique selling point through its limited production and direct ties to Carroll Shelby’s performance legacy. In the current 2026 market, “King of the Road” convertibles with a 4-speed manual and factory air conditioning represent the absolute peak of desirability. The fact that this car is a five-time concours winner and an AACA Senior award recipient adds a significant premium, as it bypasses the risks associated with unrestored or poorly documented examples. It is a blue-chip investment that offers both historical significance and verified aesthetic perfection.
Documented Provenance and the Marti Report
Ownership of this Shelby is anchored by its exceptional documentation, including the original build sheet and a Marti Report verifying its factory specifications and delivery. Crossing the block as Lot R311 at Indy 2026, the car’s history as a five-time award winner provides the transparency required for high-level acquisition. The restoration by Hunter Willard has been validated by senior judges in the AACA, ensuring that the hardware and finishes are accurate to how Shelby American intended the car to be presented in 1968. For the discerning collector, this GT500KR represents a turn-key opportunity to own an award-winning icon with a verified mechanical pedigree that remains as impressive today as it was during its first championship wins.
A Final Look at the King of the Road
The 1968 Shelby GT500KR Convertible is a physical manifestation of a time when the American muscle car reached its highest form of luxury and power. By merging the 428 Cobra Jet V-8 with the unmistakable Acapulco Blue finish and the prestige of a concours-winning restoration, Shelby created a machine that remains a standout in the modern landscape. This rare icon stands as a proud representative of the brand’s heritage as a leader in high-performance design. Whether it is destined for a national show circuit or a prominent private garage, this GT500KR remains a permanent fixture of the automotive landscape that will never lose its crown.
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Source: mecum.com
