The 1980s were lean years for musclecar enthusiasts. There were some bright spots: Corvette, 5.0 Mustang, IROC Camaro, Firebird Trans-Am and turbocharged-intercooled Buick Grand National/GNX. Arguably, the rare, high-boost GNX was the car to beat on the street and strip. If heavy metal music were a car, it would be a GNX: MAXIMUM MUSCLE FROM BUICK! “The GNX is an ax-wielding barbarian laying waste to everything in its path. It rockets to 60 mph in 4.7 seconds and squirts through the qua...