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While not exactly a "collector's edition" Corvette in its own right, it nonetheless has become a uniquely identifiable and collectible Corvette from the fourth-generation era. 1988 marked the 35th anniversary for Corvette, and so it was decided that Chevrolet should commemorate the milestone by introducing an anniversary-edition model. This anniversary car was the first of its kind in a decade, given that Chevrolet opted not to manufacture a Corvette in 1983.
For the 2012 Grand-Am season, Chevrolet was the first to unveil it's new DPG3 bodywork. This Corvette body kit will be built by Pratt & Miller and will be sold to customer teams. These body kits will fit on any existing Coyote, Riley, or Dallara chassis. This Corvette DP will be powered by a 5.0L V8 making 530BHP @ 7,000rpms and 450ft-lbs at 5,500rpms. 
This is no ordinary C4 coupe, but a GM Engineering test mule with VIN plate EX4607 proudly displayed in the windscreen, built in 1986 to test all the new-for-1988 features. This actual car must have spent weeks pounding round the General Motors Proving Ground at Milford, Michigan with longer runs on the road, testing all the changes for a year which saw the C4 suspension, steering and brakes vastly improved.