#20 – 1969/1970 Ford Mustang Boss 429
The Boss 429 Mustang is a high performance variant of the Ford Mustang that came out in in 1969 and 1970. Also known as the “Boss 9”, it is arguably one of the rarest and most valued muscle cars to date. Its origins came about as a result of NASCAR when Ford was seeking to develop an engine that could compete with Chrysler’s famed 426 Hemi in NASCAR’s Sprint Cup Series. After much consideration, Ford decided that the Mustang would be the car that would house this new engine. These cars are highly sought after and can fetch up to $417,000.00 at auction.