1986 Buick Grand National
1986 saw significant changes to the Grand National that would make it truly one of the best American performance cars of the mid-1980s. Buick added an air-to-air intercooler, adjusted the turbo, modified the upper and lower intake manifolds, and redesigned the exhaust system. All of these changes added up to a boost in power to 235 bhp and 330 lb-ft. Other changes included a revised front air dam with an opening in the center to allow cool air to reach the Intercooler duct and a revised grille with fine vertical bars. Production: Grand National: 5,512.
Well you have to race it at least once. Bone stock (well improved exhaust and a cold air kit) ran a best of 13.45.