#5 Ford Mustang Boss 429
The Boss 429 version is one of the rarest of Mustangs with only a limited number being produced in 1969 and 1970, so limited in fact, only 859 were made. The car’s semi-hemi engine could produce up to 375 HP; speculations indicate that the capability was lowered from 500 HP to keep the insurance premiums on the cars low. In fact, restrictions on many other specs like the RPM range were made; it could reach 9,000 but was lowered to 6,200. If unrestricted, the car could reach up to 175 mph – an impressive number for its time.
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