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FULL - SIZE MUSCLE CARE
Prior to the Pontiac GTO, most of the high - performance American cars were full size cars.  The big Cars had bigger engines, and usually better performance.

Chrysler introduced the 300 letter series in 1965 with the C300 and these big cars were powered by the most powerful Chrysler engines at the time. Even though they were fast and race version won many races, they were not too popular on the street because they were very expensive.