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There were several successful attempts to build a convertible ZR-1, most of them by private people. The DR-1 was a GM prototype to test the structural integrity of the ZR-1 chassis when it would be topless. The car was built by American Sunroof Corporation (ASC) for Don Runkle, who was the vice-president of Advanced Engineering Staff, which explains the “DR-1” designation. It was a standard convertible transformed to ZR-1 specs.
The 427 Limited Edition option, code Q8A and Z44, was limited to 505 examples globally with 427 destined for North American customers. As a retirement gift to Wil Cooksey, the Corvette plant manager from 1993 to 2008, he chose the color scheme and hand signed and numbered the underside of the armrest console lids on all 505 examples in which this example is #6. As part of the package, the seats and the floor mats have “427” embroidery, and the center-console trim plate is color matched.
The 2018 Carbon 65 Edition Corvette
As the 2018 model year approaches, the Chevrolet Corvette is about to reach another important milestone – its 65th anniversary! The Corvette, which for the past six-plus decades has been recognized as the nation’s most popular sports car, made its debut in Flint, Michigan on June 30, 1953.  To commemorate the car’s 65th anniversary milestone, Chevrolet is introducing the Corvette Carbon 65 Edition as an available option on the 2018 Grand Sport 3LT and Z06 3LZ models.
Chevrolet Corvette ZR-1 Spyder prototype, 1991, by ASC. An experimental styling prototype ordered by Don Runkle, Chevrolet’s chief engineer, to see how far the ZR-1 might be pushed in convertible form. The windshield was chopped in half and the seats were mounted directly to the floorpan. The black example in the National Corvette Museum was originally painted Sebring Silver with a Neutrino Yellow interior.
For only the second time in Chevrolet history, a Corvette is now available in a Drivers Series special edition. Actually, there’s four, all Grand Sports designed in collaboration with Corvette Racing team drivers Milner, Gavin, Magnussen and Garcia. The idea came from Chevrolet exterior design manager Kirk Bennion, a racing fan who was also at the Rolex 24, according to Corvette Marketing Manager Todd Christensen. Four Drivers Series special editions is definitely more fun than one.