1987 Buick GNX, Buicks Limited Edition number 22 of 547 made, 545 Sold, 2 held by GM, The GNX Grand National Experimental, a special project between General Motors and ASC McLaren. This is an Exceptional Example with super low mileage. Finding an example of the 547 GNXs is a difficult challenge, but finding one with only 7,600 miles is a rarity.