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Ford had to modify the 1969 Mustang Boss 429 just to make the engine fit

The 1969 Mustang Boss 429 was never meant to be practical. It was a street-legal NASCAR weapon, a car built around an engine ...
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5 Iconic Road Cars Powered by Race-Bred Engines

While most high-performance rides that we can legally drive on public roads are powered by beefed-up versions of normal, day-to-day engines, the following five left the factory with motors built for ...