When GM’s new colonnade-style intermediate platform debuted in 1973, the GTO would reappear in gorgeous new sheetmetal, which was artfully differentiated from its Chevy, Buick and Oldsmobile colonnade ...

There was little to visually differentiate the GTOs built on the D37 LeMans coupe and the F37 LeMans sport coupe, but one clear way to tell is by the F37 sport coupe’s louvered quarter-window ...