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The Duntov Turbo was built as a partnership between American Custom Industries (ACI), a company known for building replacement Corvette body panels, and Zora Arkus-Duntov. It was developed as a highly-stylized convertible sports car based on the production model Corvette. Each of the special Duntov Turbo's also came with a turbocharged V8.
Chevrolet's introduction of the LT1 in 1992 as the base engine in the Corvette phased out the L98 based Callaway Twin Turbo. Previously, Callaway Corvettes made their increased power through positive manifold pressure; now they made it through increased displacement and finesse. Initially called the CL1 or CR1, they designated the chassis they were built upon. They were based on the pushrod LT1 cars (CL1) or the 32 valve DOHC LT5 ZR-1 cars (CR1).
To commemorate its quarter-century milestone, Callaway Cars collaborated with Chevrolet, arranging a production run of 25 uniquely prepared 2012 Corvette Grand Sport coupes and convertibles. General Motors supplied special parts and procedures on the Bowling Green production line to facilitate final assembly at Callaway factories. Then, the performance and identity components are installed by Callaway. The 25th Anniversary Edition produced 620 bhp and 555 lb-ft of torque.
The Callaway C7 was a completely new, purpose-built car designed to embody the company’s motto: “Powerfully Engineered Automobiles”, carrying on the visual tradition of design by Paul Deutschman and offered in a limited production series. The C7 was the first complete, bespoke Callaway Automobile. This sportscar was equipped with a carbon chassis, front mid engine/rear transaxle design, 650 horsepower SuperNatural engine.
For the fourth generation Corvette, legendary Corvette racer John Greenwood developed the G4R. It was essentially a radical bodykit that usually followed a high level of performance upgrades. Included was a ground effects package that had integrated lights on the front valance. Furthermore the a new engine scoop and rear wing were fitted.
Genovation GXE C7 Corvette Stingray
Genovation Cars unveiled an electric Corvette with more power under its hood than a Dodge Challenger Hellcat. They call their car the Genovation GXE, and it is an EV (electric vehicle) variant of the seventh-generation Corvette. The company decided that they would replace the factory LT1 engine found in all base-model C7 Corvettes with a pair of electric motors that, when working in conjunction with each other, provide over 800 horsepower and 700 pound-feet of torque. 
When Dick Guldstrand introduced the GS80 series in 1986, the car was targeted specifically at Pro-Solo and autocross enthusiasts. He knew all about the needs of these groups, as he was a longtime provider of performance upgrades for the C3 and a direct supporter of a small team of racers from the Western Council of Corvette Clubs. Up to this point, Dick had basically been a tuner. With the intro of the GS80 he was venturing into the realm of small-volume manufacturing.
In 2003 Dick produced his version of a 50th Anniversary Corvette. Dick’s 50th Anniversary Corvette was bright gold with blue accents. And of course a “special” Corvette should be the toughest available version, which in 2003 was the Z06. And to top it all off, the Z06’s LS6 was opened up to the magical “426 CID.” The GS80 came out in 1986 that was more or less a Showroom Stock-prepared black beauty with very trendy lace wheels.