Ford Mustang 1969 Boss 429 For Sale

Save $17169 on a 1969 Ford Mustang Boss 429 near you. Search over 41200 listings to find the best local deals. We analyze millions of used cars daily. For Sale 1969 Ford Mustang. Zoom icon. Take Ford's legendary Mustang Boss 429, for example.. The origin of Ford's fabled 'Boss 9' is classically simple.