Carroll Shelby's big-block Mustang across its full 1967–1970 run — from the launch 428 Police Interceptor cars to the 428 Cobra Jet KR and the restyled 1969–70 SportsRoof.
Introduced in 1967, the GT500 replaced the small-block GT350 as Shelby's headline Mustang and used Ford's 428 Police Interceptor V8. From April 1968 the 428 Cobra Jet was fitted, badged 'GT500 KR' — King of the Road. The 1969 restyle moved production entirely to Ford's Dearborn line and dressed the SportsRoof body in Shelby-specific fibreglass, driving lights, side scoops and a longer nose. Unsold 1969 cars were re-VIN'd under federal supervision and sold as 1970 models to close the programme out — the 1970 GT500s are re-titled 1969 cars, not new production.
Cars were offered as a fastback or SportsRoof and, from 1968, a convertible, all with Shelby-specific fibreglass nose, hood and tail panels. The GT500 line covers 2,048 cars in 1967, roughly 2,993 across all 1968 derivatives (1,422 standard GT500s plus 1,571 KRs), around 1,402 in 1969 and about 470 re-titled 1970s — a full-run total near 6,913.
The definitive late-1960s Shelby Mustang — 428 Cobra Jet firepower, three distinct body eras in four years, and Carroll Shelby provenance across every VIN.
| Variant | Years | Production | Notes |
|---|---|---|---|
| GT500 (1967) | 1967 | 2,048 | 428 Police Interceptor V8; fastback only. Plus two prototypes. |
| GT500 (1968) | 1968 | 1,422 | 1,020 fastback + 402 convertible. 428 Police Interceptor (early) or, from April, 428 Cobra Jet. Excludes the 1,571 KR cars. |
| GT500 KR — King of the Road (1968) | 1968 | 1,571 | 1,053 fastback + 518 convertible. 428 Cobra Jet with ram-air; replaced the standard 428 mid-year. |
| GT500 (1969) | 1969 | 1,402 | 1,157 fastback + 245 convertible. Restyled SportsRoof with fibreglass Shelby nose, five NACA-style bonnet vents and side scoops; 428 Cobra Jet standard. |
| GT500 (1970) | 1970 | 470 | Unsold 1969 cars re-VIN'd under FBI supervision and sold as 1970 models — not new production. Black chin spoiler and twin bonnet stripes distinguish them. |
The models below represent the most significant limited and special edition variants — factory-produced cars that command meaningful premiums over standard examples and warrant specific attention from serious collectors.
Production figures sourced from official marque records and specialist registers. Verify chassis documentation with the relevant marque register before purchase.
Start with identity, paperwork and originality. For the Shelby GT500, the strongest cars have continuous ownership history, matching numbers where applicable, factory build documentation and Shelby American Automobile Club (SAAC) registry entries. Marti Report, SAAC registry entry, matching-numbers drivetrain, original colour combination and the correct-year Shelby fibreglass are the money-makers.
The 428 Police Interceptor and 428 Cobra Jet share the FE-family bottom end but differ in heads, intake, exhaust manifolding and ram-air provisioning. Confirm engine code stamping, verify Cobra Jet-specific parts on KR / 1969–70 cars, and check for evidence of a period-correct top-end rebuild. A proper pre-purchase inspection includes cold-start behaviour, compression and leak-down testing, underbody photography, chassis inspection for repair and correction, and a long road test to expose heat-related faults. Deferred maintenance on a Shelby is almost always more expensive than paying up for a better-sorted example.
Shelby cars carry a large proportion of hand-finished, low-volume bodywork — fibreglass panels on the Mustang-based cars, hand-formed aluminium on the Daytona Coupe, and composite panels on the Series 1. Use a paint-depth gauge, lift access and a specialist familiar with the model's factory panel gaps. Value is dramatically affected by structural repairs, refinished panels and missing original trim. Documented cosmetic refresh is acceptable; concealed accident or fire damage must be priced severely.
Documented Marti Report cars in original colour, original drivetrain and factory Shelby specification (not later Eleanor-style tribute upgrades) are the strongest value drivers. 1968 KRs and the restyled 1969–70 Cobra Jet SportsRoof cars are the standout eras. Specification, colour, options and limited-build variants move values significantly. Buy the best-documented example in the most desirable specification you can justify, not a tired example of a rarer derivative that will need years of corrective work.
Regional ranges authored independently — each reflects its local market, not an FX conversion
Each region quoted in its local currency — independent market readings, not FX conversions
A mature US collector market with strong demand for KR and 1969–70 Cobra Jet cars, particularly SportsRoof examples in original colour with documented Marti Reports. Standard 1967–68 fastback GT500s trade steadily; clone and tribute cars — particularly Eleanor-style rebodies of donor Mustangs — trade well below documented Shelby VINs and should never be confused with the real cars.
| Date | Auction | Car | Mileage | Result |
|---|---|---|---|---|
| 2026-05-16 | Mecum Indianapolis | 1967 GT500 Fastback (Lot F203) | — | $363,000 Sold |
| 2025-01-12 | Mecum Kissimmee | 1968 GT500 KR Convertible | 45,000 mi | $418,000 Sold |
The mature US muscle market anchors the GT500 across all four production years. Documented KRs and 1969–70 Cobra Jet SportsRoof cars are blue-chip within the segment; the broader market is stable rather than appreciating, and non-original or heavily tributised cars are exposed.
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The valuation figures in this guide are for research purposes only and do not constitute financial or investment advice. See our full disclaimer.
