March Muscle Car Madness Winner: 1969 Ford Mustang Boss 429Jason Torchinsky4/12/12 2:30pm2081EditPromoteGo to permalinkIt's done. We did it. Find someone around you and give them a big hug and a high-five. We've picked an ultimate Muscle Car in our March Muscle Car Madness bracket, and it's the 1969 Ford Mustang Boss 429. For those of you without any strong religious convictions, you may wish to try praying to it.