The European Sportscar Championship was a name used by several sports car racing championships based in Europe.
 Initially created in 1970 by the Fédération Internationale du Sport Automobile (FISA) as the European 2-Litre Sports Car Championship for Makes, the series increased in popularity and eventually became part of the World Sports Car Championship in 1976 even after a troubled 1975 season.
 Only two years later, as interest in sports-prototypes faded, the championship was downgraded from World Championship status and a European championship returned once more, only to be cancelled after its sole 1978 season.
The Alfa Romeo 1750 Berlina and Alfa Romeo 2000 Berlina (both 105 series) were executive cars (E-segment) produced by Italian car manufacturer Alfa Romeo from 1968 to 1977.
 "Berlina" is the Italian term for a saloon car.
The Chevrolet Corvette (C3) was a sports car that was produced by Chevrolet for the 1968 through 1982 model years. Engines and chassis components were mostly carried over from the previous generation, but the body and interior were new.
 It set new sales records with 53,807 produced for the 1979 model year.
 The C3 is the third generation of the Chevrolet Corvette, while the 1969 through 1976 models mark the second generation of the Corvette Stingray.
The Romano WE84 is an Australian designed and built, mid-engined closed top racing car built to CAMS Group A Sports Car specifications.
 The car began its life as the Kaditcha K583 when it first appeared in the 1983 Australian Sports Car Championship and was built by the Queensland based Kaditcha owner and former McLaren engineer Barry Lock after he was approached by Brisbane accountant, property developer, timber mill owner and former speedway racer Bap Romano in 1981 with the idea of building a Le Mans type coupe.
 When the car first appeared in 1983, it was the first closed top Sports Car seen in Australia and looked like an FIA Group C Sports Car (such as the Porsche 956) rather than the open cockpit Can-Am style cars of previous years.
 This led to the false belief that it was built to the Group C regulations
The 2012 Mid-Ohio Sports Car Challenge was a multi-class sports car and GT motor race held at the Mid-Ohio Sports Car Course in Ohio, United States on August 4, 2012.
 It was the sixth round of the 2012 American Le Mans Series season and the 41st race in the combined history of sportscar races associated with the Mid-Ohio Sports Car Challenge.
 The race was held over a two-hour-and-45-minute time period, during which 123 laps of the 3.6 kilometre circuit were completed for a race distance of 447 kilometres.
The Phillips Berlina is a neo-classic car built in Pompano Beach, Florida in the early nineteen-eighties.
 Debuting in 1980, it was designed by Charles W. Phillips in the style of the 1936 Mercedes-Benz 540K Special Roadster.
 It used stretched C3 Chevrolet Corvette underpinnings, coupled to fibreglass bodywork.
 As for the Corvette, power steering and brakes, powered tinted windows, and tilt steering were fitted.
 The fuel injected 5.7 litre V8 engine in the 1982 Berlinas offers 200 hp at 4,200 rpm, for a top speed of around 180 km/h .
 The earlier carburetted version (L81) had 190 hp on tap.
 By 1982, a special "Coupé SE" version was also available.
The Alpine A210 was a sports car prototype manufactured by Alpine that competed in sports car racing from 1966 to 1969.
 The car derived from the M series prototypes (M63, M64, and M65) introduced by the company in the early 1960s and powered by Gordini-tuned Renault engines with small displacements.
 In 1967, a short-lived V8-powered version of the A110, named as A111, was introduced.
 A major redesign of the A111, the A220, was unveiled the following year.
 The bad results of this last two cars made Alpine to withdraw of sports car racing for various years.
Kathy Rude (born 1957) is an American sports car driver who was one of the first female drivers to attract international attention.
 Growing up in Victoria, Canada, she began competing as a teenager in karting events.
 By her early 20s, after competing in Formula Ford and Formula Atlantic, she attracted the attention of several top-tier car owners, and tested an IndyCar owned by Dick Simon.
 She was a member of the original North American Toyota factory-sponsored IMSA GT Championship sports car team in 1981.
 In February 1982, co-driving a factory-sponsored Mazda RX-7 with Allan Moffat and Lee Mueller, she earned a GTU class victory at the 24 Hours of Daytona—the first woman ever to win a major professional sports car event.
 She signed a deal to make her debut at the Indianapolis 500 in 1984, but during an IMSA sports car event at Brainerd, Minnesota in July 1983, she suffered horrific injuries in a crash which ended her racing career.
 Noted sports car champion Brian Redman once referred to her as the only female driver he'd encountered who posed a genuine threat to win major professional automobile races.
 She is now a corporate safe driving instructor and speaker.
The SCCA National Sports Car Championship was a sports car racing series organized by the Sports Car Club of America from 1951 until 1964.
 It was the first post-World War II sports car series organized in the United States.
 An amateur championship, it was eventually replaced by the professional United States Road Racing Championship and the amateur American Road Race of Champions.
The Oak Tree Grand Prix is a sports car race held at the Virginia International Raceway in Alton, Virginia, since 1957.
 After being a part of the SCCA National Sports Car Championship and the IMSA GT Championship the race, along with the track, went on hiatus from the early 1970s until 2002.
 It returned as a round of the Rolex Sports Car Series, and became an American Le Mans Series race in 2012.
 In 2014 the race joined the schedule of the United SportsCar Championship after the merger of the American Le Mans Series and the Rolex Sports Car Series.

Question: The Phillips Berlina used stretched underpinings from a sports car that was produced during what years? 
Answer: 1968 through 1982