It wasn’t built to be a boulevard cruiser or a poser’s muscle car. The 1969 Mustang Boss 429 came to play hardball.

Even with a blank check, you'd be hard-pressed to find a vintage Mustang as ... their new engine in NASCAR. The 429 was meant to outshine Chrysler's 426 Hemi. Around 900 Boss 429 street cars ...

Ford sold over 7,000 Boss 302s in 1970, but only 305 examples were painted Calypso Coral and fitted with this specific ...