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The sight of any ’86 Pontiac 2+2 is rare enough, but one bearing a VIN marked EX4788 and with a GM-provided description calling it an ’85 model? Now that’s pretty wild. Though Pontiac did build 1,118 of these aerodynamically enhanced GPs for NASCAR homologation in 1986, this one’s a preproduction prototype. Though it carries the same sleepy 165hp 305 as any other V8 GP (sorry, no LS1). The real news is at the back of the car.