Holy Grails: Classic Muscle Cars With Single-Digit Production Numbers

Vukasin Herbez March 24, 2023

1966 Shelby Cobra Supercharged – 2 Made

What do you get when you put a big Paxton supercharger on top of Ford’s 427 V8 engine and install it in a light and nimble Cobra body? Carroll Shelby gave us the answer to that question in the form of a fantastically rare Cobra with 800 HP, which he produced as a unique project in 1966. Only two cars left the factory. One crashed and was destroyed and the other recently sold for a staggering $5.5 million (via Supercars).

This Cobra originally cost double the price of the standard 427 Cobra, which was already an expensive car. But it’s not just the sheer cost that turned buyers away from this car. The Supercharged Cobra was also notoriously dangerous to drive and customers didn’t want to drive a death trap.

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1967 Shelby Super Snake – 1 Made

This unique Shelby GT500 was produced as a rolling laboratory to showcase the possibilities of the Mustang platform as well as for testing Goodyear’s ‘Thunderbolt’ tire line. It had a Le Mans-winning GT 40 race engine, special transmission, suspension, and tires. Only one ever left the factory (via Supercars).

There were plans for a limited production run, but the proposed price was over $8000, which was an enormous sum in the late ’60s. That was too bad since the Super Snake was capable of 170 mph top speed, unheard of in the late ’60s. It could put the Mustang as the world’s fastest muscle car. The car sold twice in recent years and had set up a couple of auction records. The last one was $2.2 million.

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1970 Chrysler 300 Hurst Convertible – 1 Made

Everybody knows about the legendary Chrysler 300 “Letter Cars,” a series of high-powered coupes and convertibles built from 1955 to 1965. However, in 1970, a special limited edition 300 Hurst was produced. It was built in very limited numbers, around 500 coupes, with the help of the famous transmission company Hurst. It featured a special white and gold paint job, a similarly styled interior, and a rear spoiler integrated into the rear deck lid (via Street Muscle Magazine).

Under the hood, there was a mighty 440 V8 engine with 395 HP, which could propel the two-ton beast to respectful acceleration times. But for promotional purposes, Hurst built only one 300 Hurst Convertible, making it the rarest muscle car in the world. The vehicle was in promotional material and old photos. It was a valuable promotional tool for Hurst company and Chrysler’s performance and was used on high-profile drag racing events. The current whereabouts of this special Chrysler are unknown.

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1967 Ford Country Squire Wagon 428 with 4-speed – 1 Made

Ford’s luxury 1966 Country Squire station wagon was the perfect example of a muscle car disguised as a long roof. To an average person, this car looked like a big old station wagon that could haul nine people, carry a lot of stuff, and cruise highways. But to experienced enthusiasts, just one glance under the hood could reveal the true nature of this car (via Auto Blog).

For 1966 and 1967, Ford offered a 428 V8 engine as an option on its station wagon model lineup. The 428 V8 in question was not the famed Cobra Jet but the engine from the Thunderbird with 345 underrated horsepower. With over 460 lb.-ft of torque, the Country Squire could truly go despite the size and weight. Only one left the factory with a four-speed manual. This one is a brutally fast car hidden as an ordinary family station wagon with woodgrain inserts on the sides.

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1968 Shelby EXP 500 “Green Hornet” – 1 Made

During the Mustang’s heyday, Ford and Shelby worked hard to explore the possibilities and limits of the Mustang’s platform and engineering, and they produced several exciting prototypes. One of the most popular is the “Green Hornet” from 1968. Although it wasn’t the only car, the Green Hornet featured the most innovative features like 390 V8 equipped with fuel injection, unique disc brakes on all four wheels, and an independent rear suspension (via Shelby Prototype Coupes).

With this layout, the Green Hornet was a very capable car that handled and stopped better than any other sports car on the market. Unfortunately, the cost of producing those features was too high, and Ford and Shelby decided to go with more conventional technology. Also, the “Green Hornet” is one of the rare surviving cars from the era and possibly one of the most expensive Mustangs for sale, but the $1.8 million offer wasn’t enough.

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Holy Grails: Classic Muscle Cars With Single-Digit Production Numbers

1966 Shelby Cobra Supercharged – 2 Made

1967 Shelby Super Snake – 1 Made

1970 Chrysler 300 Hurst Convertible – 1 Made

1967 Ford Country Squire Wagon 428 with 4-speed – 1 Made

1968 Shelby EXP 500 “Green Hornet” – 1 Made

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