The Pagura #61 race car alternates between a 1979 Pontiac Ventura and a 1974 with the 1979 nose; then later in the movie alternates between a 1979-1984 LeMans and the same 1974 Ventura. The Landruff #13 also changes from a 1979 Ventura to a 1974.
Racing scenes show multiple spins that would have caused a caution flag to be shown, but no caution occurs.