Autoblog and Yahoo may earn commission from links in this article.This 1968 Shelby Mustang GT500 fastback is a blue-chip slice of American performance history: a genuine, Marti-documented big-block Shelby in the handsome and period-correct Highland Green, one of just 1,020 fastbacks built for the year. It benefits from a comprehensive restoration costing over $140,000 around 2015, and it carries the desirable 428 V8. For a collector seeking an iconic first-generation Shelby with strong documentation, this is a compelling and well-presented example.1968 Shelby Mustang GT500 FastbackBring a TrailerWhat it's worth right nowClassic.com tracks the first-generation GT500, where recorded sales span a wide range, from a $72,000 low for a convertible up to a $440,000 high for an exceptional 1967 fastback. For a standard 1968 GT500 fastback, well-restored, documented driver-to-show cars generally trade in the low-to-mid six figures, below the premium the later 428 Cobra Jet GT500KR commands, which Sports Car Market notes typically runs 20 to 25 percent higher.AdvertisementAdvertisementThis car has the fundamentals collectors want: it is a genuine GT500 fastback confirmed by a Deluxe Marti Report, it wears the desirable Highland Green, and it has a documented, comprehensive restoration behind it. Commenters, a knowledgeable Shelby crowd, praised the quality and restraint of the restoration, with one calling it among the nicest they had seen on the platform, while noting a few minor restoration details, which is normal scrutiny on cars at this level.1968 Shelby Mustang GT500 FastbackBring a TrailerGiven the genuine GT500 status, the strong documentation, the desirable color, and the quality restoration, I would call fair value roughly $150,000 to $200,000. The current $130,000 bid with two bids and nine days remaining is below that and early, and with the long auction window and the interest these cars draw, expect it to build toward that range.Condition and detailsThe presentation reflects the investment. This GT500 fastback is finished in its original Highland Green with GT500 side stripes, and it has the model's signature Shelby fiberglass details: the ducktail rear spoiler, fender extensions, sail-panel and quarter-panel air scoops, and the ventilated fiberglass hood with ram-air scoop. It rides on 15-inch aluminum 10-spoke wheels with Shelby Cobra center caps and Goodyear Speedway tires, and it retains power steering, power front disc brakes, and the upgraded Shelby suspension. The restoration around 2015 by Leadfoot Muscle Cars, costing over $140,000, included disassembly, metal repairs, a repaint, an engine rebuild, and trim replacement with rechromed bumpers.1968 Shelby Mustang GT500 FastbackBring a TrailerThe car was originally specified with an appealing list of factory equipment documented by the Marti Report, including the black knitted Décor bucket seats, the Visibility and Interior Décor groups, the Extra Cooling Package, a Sport Deck rear seat, a tilt-away column, and a tachometer. The 428 V8, three-speed C-6 automatic, and 3.50 rear end were all rebuilt during the restoration. The five-digit odometer shows 68,000 miles with the title listing the reading as exempt, and only about 50 miles have been added under current ownership, so it has been sparingly used since the work.1968 Shelby Mustang GT500 FastbackBring a TrailerThe diligence on a six-figure Shelby is largely about authenticity and restoration quality, both of which are well supported here. Verify the Marti Report against the car and confirm the chassis and drivetrain numbers, since genuine GT500s command a large premium over the many clones and tributes of these cars. Review the included restoration records to understand exactly what was done, assess the decade-old restoration for how it has held up and been maintained since, and have a first-generation Shelby specialist perform a pre-purchase inspection. This is a dealer consignment through a BaT Local Partner, and given the value, a thorough authentication and inspection is well worth it.1968 Shelby Mustang GT500 FastbackBring a TrailerAdvertisementAdvertisementThe offerSpecificationDetailMakeShelby (Ford)ModelMustang GT500 FastbackYear1968Mileage68,000 shown (title exempt)Engine428ci V8Power360 horsepower, 420 lb-ftTransmissionThree-speed automaticDrive typeRear-wheel driveExterior colorHighland GreenInterior colorBlackCurrent bidUSD $130,000Interested in this car? View the listing here.What makes the GT500 uniqueThe Shelby GT500 is one of the most iconic American performance cars ever built, and the 1968 version holds a specific place in the story. Powered by Ford's 428 big-block V8, rated at 360 horsepower with a single four-barrel carburetor, it delivered the effortless big-block torque that defined the muscle era, wrapped in Carroll Shelby's dramatic fiberglass restyling of the Mustang fastback, with its aggressive nose, functional scoops, and ducktail spoiler. The GT500 far outsold its small-block GT350 sibling, and 1968 was a pivotal year: production moved to Ford's Metuchen, New Jersey plant with final Shelby assembly by A.O. Smith in Michigan, and midyear the 428 Cobra Jet arrived to create the legendary GT500KR.1968 Shelby Mustang GT500 FastbackBring a TrailerThat history, combined with genuine scarcity, is what makes a real GT500 fastback so coveted. With only 1,020 fastbacks built for 1968 and the Ford-Shelby partnership ending after that year, authenticated examples are the blue-chip end of the classic Mustang market, and values reward originality, documentation, color, and restoration quality. A Marti-documented, comprehensively restored Highland Green fastback checks the boxes collectors prioritize, which is exactly why this car belongs in a premium listing and draws the attention it does.My takeThis is a genuine, well-documented, handsomely restored 1968 GT500 fastback in a desirable color, and the Marti Report and $140,000-plus restoration give it the provenance and quality that matter most on these cars. My fair-value call is $150,000 to $200,000, reflecting its status as a standard GT500 fastback, below the Cobra Jet KR premium but firmly in blue-chip Shelby territory. I would be comfortable in that range for a car whose authenticity and restoration verify as strongly as they present.AdvertisementAdvertisementThe buying advice centers on authentication and restoration quality, given how much genuine GT500s are worth relative to clones. Verify the Marti Report against the car and confirm the numbers, review the restoration records to understand the scope of the work, assess how the decade-old restoration has held up, and get a pre-purchase inspection from a first-generation Shelby specialist. Handle those, and the current $130,000 bid is an early figure on a genuine, documented, iconic big-block Shelby with real room to climb.Disclaimer: This post is for informational purposes only. We are not a dealership or broker. All vehicle specifications, pricing, and availability are subject to change without notice. We are not responsible for typographical errors, omissions, or the accuracy of the provided information. Please verify all details directly with the seller.Disclaimer: Autoblog aims to feature only the best products and services. If you buy something via one of our links, we may earn a commission.This story was originally published by Autoblog on Aug 15, 2026, where it first appeared in the Car Buying section. 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