2025 Ford Mustang Boss 429. With classic pony car style and the muscle to match, the 2025 mustang is a thoroughly modern machine that never forgets it past. The 2025 ford mustang boss 429 is here, and it's rewriting the rules of muscle cars.
Personalize everything from the wheels to the engine. Ford created the boss 429 to compete with chrysler’s 426 hemi, but putting the gigantic engine into a mustang engine bay provided unique challenges.