A true icon of American muscle car history is now live for bidding on Bring a Trailer: a 1969 Ford Mustang Boss 429, finished ...

creating the Mustang Boss 429 to satisfy NASCAR homologation rules. By offering a street version of the Boss 429 engine to the general public in a limited number of production cars, the Ford ...

The Boss 429 Mustang is all V-8 and no apologies. Only 850 fastbacks were made for the 1969 model year. This example looks to ...

and the Boss 302 (along with the ultrarare Boss 429, built for NASCAR competition) did it best. Produced only for the 1969 and 1970 model years, neither Boss was common, with just 8,641 and 1,359 ...

The transmission is a four-speed manual, and there's a limited-slip rear differential out back. The Boss 429 was sold for two model years only, 1969 and 1970. It was built to fulfill NASCAR's rules on ...