This is a ’69 Mustang Boss 429 that was at the 2019 Mecum Auction in Kissimmee. This is from the third phase of the first generation of the Mustang, which was made between July of 1968 and June of 1969 (model years between 1969 and 1970). The Boss 429 is a special high performance Mustang that was made in 1969 and 1970, and 859 of which were made in 1969. The engine is a 7 liter V8 that produces 375 horsepower and 450 pound-feet of torque. The transmission is a 4-speed manual.