Complex sentence: The Golden Hawk, fitted with Packard's powerful big-block 352 cubic inch (5.8 L) V8, was the best all-around high performance car of the year, with the second highest power-to-weight ratio of any American production car.
Split into simpler sentences: The Golden Hawk, fitted with Packard's powerful big-block 352 cubic inch (5.8 L) V8, was the best all-around high performance car of the year. It had the second highest power-to-weight ratio of any American production car.